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GitHub - kszucs/firebolt: Arrow implementation in Mojo
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17.9125 8.46625C18.6138 9.23625 19.04 10.2125 19.04 11.4225C19.04 15.6437 16.4688 16.5787 14.0213 16.8537C14.42 17.1975 14.7638 17.8575 14.7638 18.8887C14.7638 20.36 14.75 21.5425 14.75 21.9137C14.75 22.2025 14.9563 22.5462 15.5063 22.4362C19.8513 20.9787 23 16.8537 23 12C23 5.9225 18.0775 1 12 1Z"></path> </svg> </a> <div class="flex-1 flex-order-2 text-right"> <a href="/login?return_to=https%3A%2F%2Fgithub.com%2Fkszucs%2Ffirebolt" class="HeaderMenu-link HeaderMenu-button d-inline-flex d-lg-none flex-order-1 f5 no-underline border color-border-default rounded-2 px-2 py-1 color-fg-inherit js-prevent-focus-on-mobile-nav" data-hydro-click="{"event_type":"authentication.click","payload":{"location_in_page":"site header menu","repository_id":null,"auth_type":"SIGN_UP","originating_url":"https://github.com/kszucs/firebolt","user_id":null}}" data-hydro-click-hmac="17f5f3d7e97426f6b5155dc6e60adf95bb588df727db837ff8ee9186b075e9e3" data-analytics-event="{"category":"Marketing nav","action":"click to Sign in","label":"ref_page:Marketing;ref_cta:Sign in;ref_loc:Header"}" > Sign in </a> </div> </div> <div class="HeaderMenu js-header-menu height-fit position-lg-relative d-lg-flex flex-column flex-auto top-0"> <div class="HeaderMenu-wrapper d-flex flex-column flex-self-start flex-lg-row flex-auto rounded rounded-lg-0"> <nav class="HeaderMenu-nav" aria-label="Global"> <ul class="d-lg-flex list-style-none"> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Product <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down 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data-view-component="true" class="octicon octicon-copilot color-fg-subtle mr-3"> <path d="M23.922 16.992c-.861 1.495-5.859 5.023-11.922 5.023-6.063 0-11.061-3.528-11.922-5.023A.641.641 0 0 1 0 16.736v-2.869a.841.841 0 0 1 .053-.22c.372-.935 1.347-2.292 2.605-2.656.167-.429.414-1.055.644-1.517a10.195 10.195 0 0 1-.052-1.086c0-1.331.282-2.499 1.132-3.368.397-.406.89-.717 1.474-.952 1.399-1.136 3.392-2.093 6.122-2.093 2.731 0 4.767.957 6.166 2.093.584.235 1.077.546 1.474.952.85.869 1.132 2.037 1.132 3.368 0 .368-.014.733-.052 1.086.23.462.477 1.088.644 1.517 1.258.364 2.233 1.721 2.605 2.656a.832.832 0 0 1 .053.22v2.869a.641.641 0 0 1-.078.256ZM12.172 11h-.344a4.323 4.323 0 0 1-.355.508C10.703 12.455 9.555 13 7.965 13c-1.725 0-2.989-.359-3.782-1.259a2.005 2.005 0 0 1-.085-.104L4 11.741v6.585c1.435.779 4.514 2.179 8 2.179 3.486 0 6.565-1.4 8-2.179v-6.585l-.098-.104s-.033.045-.085.104c-.793.9-2.057 1.259-3.782 1.259-1.59 0-2.738-.545-3.508-1.492a4.323 4.323 0 0 1-.355-.508h-.016.016Zm.641-2.935c.136 1.057.403 1.913.878 2.497.442.544 1.134.938 2.344.938 1.573 0 2.292-.337 2.657-.751.384-.435.558-1.15.558-2.361 0-1.14-.243-1.847-.705-2.319-.477-.488-1.319-.862-2.824-1.025-1.487-.161-2.192.138-2.533.529-.269.307-.437.808-.438 1.578v.021c0 .265.021.562.063.893Zm-1.626 0c.042-.331.063-.628.063-.894v-.02c-.001-.77-.169-1.271-.438-1.578-.341-.391-1.046-.69-2.533-.529-1.505.163-2.347.537-2.824 1.025-.462.472-.705 1.179-.705 2.319 0 1.211.175 1.926.558 2.361.365.414 1.084.751 2.657.751 1.21 0 1.902-.394 2.344-.938.475-.584.742-1.44.878-2.497Z"></path><path d="M14.5 14.25a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Zm-5 0a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Z"></path> </svg> <div> <div class="color-fg-default h4">GitHub Copilot</div> Write better code with AI </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" 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</a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"actions","context":"product","tag":"link","label":"actions_link_product_navbar"}" href="https://github.com/features/actions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-workflow color-fg-subtle mr-3"> <path d="M1 3a2 2 0 0 1 2-2h6.5a2 2 0 0 1 2 2v6.5a2 2 0 0 1-2 2H7v4.063C7 16.355 7.644 17 8.438 17H12.5v-2.5a2 2 0 0 1 2-2H21a2 2 0 0 1 2 2V21a2 2 0 0 1-2 2h-6.5a2 2 0 0 1-2-2v-2.5H8.437A2.939 2.939 0 0 1 5.5 15.562V11.5H3a2 2 0 0 1-2-2Zm2-.5a.5.5 0 0 0-.5.5v6.5a.5.5 0 0 0 .5.5h6.5a.5.5 0 0 0 .5-.5V3a.5.5 0 0 0-.5-.5ZM14.5 14a.5.5 0 0 0-.5.5V21a.5.5 0 0 0 .5.5H21a.5.5 0 0 0 .5-.5v-6.5a.5.5 0 0 0-.5-.5Z"></path> </svg> <div> <div class="color-fg-default h4">Actions</div> Automate any 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0-.25-.25Z"></path><path d="M10 17.75a.75.75 0 0 1 .75-.75h6.5a.75.75 0 0 1 0 1.5h-6.5a.75.75 0 0 1-.75-.75Zm-4 0a.75.75 0 0 1 .75-.75h.5a.75.75 0 0 1 0 1.5h-.5a.75.75 0 0 1-.75-.75Z"></path> </svg> <div> <div class="color-fg-default h4">Codespaces</div> Instant dev environments </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"issues","context":"product","tag":"link","label":"issues_link_product_navbar"}" href="https://github.com/features/issues"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-issue-opened color-fg-subtle mr-3"> <path d="M12 1c6.075 0 11 4.925 11 11s-4.925 11-11 11S1 18.075 1 12 5.925 1 12 1ZM2.5 12a9.5 9.5 0 0 0 9.5 9.5 9.5 9.5 0 0 0 9.5-9.5A9.5 9.5 0 0 0 12 2.5 9.5 9.5 0 0 0 2.5 12Zm9.5 2a2 2 0 1 1-.001-3.999A2 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1.75h-9.69l-3.573 3.573A1.458 1.458 0 0 1 5 21.043V18.5H3.25a1.75 1.75 0 0 1-1.75-1.75ZM3.25 4a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h2.5a.75.75 0 0 1 .75.75v3.19l3.72-3.72a.749.749 0 0 1 .53-.22h10a.25.25 0 0 0 .25-.25V4.25a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Review</div> Manage code changes </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"discussions","context":"product","tag":"link","label":"discussions_link_product_navbar"}" href="https://github.com/features/discussions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-comment-discussion color-fg-subtle mr-3"> <path d="M1.75 1h12.5c.966 0 1.75.784 1.75 1.75v9.5A1.75 1.75 0 0 1 14.25 14H8.061l-2.574 2.573A1.458 1.458 0 0 1 3 15.543V14H1.75A1.75 1.75 0 0 1 0 12.25v-9.5C0 1.784.784 1 1.75 1ZM1.5 2.75v9.5c0 .138.112.25.25.25h2a.75.75 0 0 1 .75.75v2.19l2.72-2.72a.749.749 0 0 1 .53-.22h6.5a.25.25 0 0 0 .25-.25v-9.5a.25.25 0 0 0-.25-.25H1.75a.25.25 0 0 0-.25.25Z"></path><path d="M22.5 8.75a.25.25 0 0 0-.25-.25h-3.5a.75.75 0 0 1 0-1.5h3.5c.966 0 1.75.784 1.75 1.75v9.5A1.75 1.75 0 0 1 22.25 20H21v1.543a1.457 1.457 0 0 1-2.487 1.03L15.939 20H10.75A1.75 1.75 0 0 1 9 18.25v-1.465a.75.75 0 0 1 1.5 0v1.465c0 .138.112.25.25.25h5.5a.75.75 0 0 1 .53.22l2.72 2.72v-2.19a.75.75 0 0 1 .75-.75h2a.25.25 0 0 0 .25-.25v-9.5Z"></path> </svg> <div> <div class="color-fg-default h4">Discussions</div> Collaborate outside of code </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"code_search","context":"product","tag":"link","label":"code_search_link_product_navbar"}" href="https://github.com/features/code-search"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-code-square color-fg-subtle mr-3"> <path d="M10.3 8.24a.75.75 0 0 1-.04 1.06L7.352 12l2.908 2.7a.75.75 0 1 1-1.02 1.1l-3.5-3.25a.75.75 0 0 1 0-1.1l3.5-3.25a.75.75 0 0 1 1.06.04Zm3.44 1.06a.75.75 0 1 1 1.02-1.1l3.5 3.25a.75.75 0 0 1 0 1.1l-3.5 3.25a.75.75 0 1 1-1.02-1.1l2.908-2.7-2.908-2.7Z"></path><path d="M2 3.75C2 2.784 2.784 2 3.75 2h16.5c.966 0 1.75.784 1.75 1.75v16.5A1.75 1.75 0 0 1 20.25 22H3.75A1.75 1.75 0 0 1 2 20.25Zm1.75-.25a.25.25 0 0 0-.25.25v16.5c0 .138.112.25.25.25h16.5a.25.25 0 0 0 .25-.25V3.75a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Search</div> Find more, search less </div> </a></li> </ul> </div> </div> <div class="HeaderMenu-column px-lg-4"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0 border-bottom-0"> <span class="d-block h4 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12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Solutions <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 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Link--secondary" data-analytics-event="{"location":"navbar","action":"view_all_industries","context":"solutions","tag":"link","label":"view_all_industries_link_solutions_navbar"}" href="/solutions/industry"> View all industries </a></li> </ul> </div> </div> <div class="HeaderMenu-trailing-link rounded-bottom-2 flex-shrink-0 mt-lg-4 px-lg-4 py-4 py-lg-3 f5 text-semibold"> <a href="/solutions"> View all solutions <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-right HeaderMenu-trailing-link-icon"> <path d="M6.22 3.22a.75.75 0 0 1 1.06 0l4.25 4.25a.75.75 0 0 1 0 1.06l-4.25 4.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L9.94 8 6.22 4.28a.75.75 0 0 1 0-1.06Z"></path> </svg> </a> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Resources <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 d-lg-flex flex-wrap dropdown-menu-wide"> <div class="HeaderMenu-column px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="resources-topics-heading">Topics</span> <ul 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data-view-component="true" class="octicon octicon-link-external HeaderMenu-external-icon color-fg-subtle"> <path d="M3.75 2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"executive_insights","context":"resources","tag":"link","label":"executive_insights_link_resources_navbar"}" href="https://github.com/solutions/executive-insights"> Executive Insights </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Open Source <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 px-lg-4"> <div class="HeaderMenu-column"> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"github_sponsors","context":"open_source","tag":"link","label":"github_sponsors_link_open_source_navbar"}" href="/sponsors"> <div> <div class="color-fg-default h4">GitHub Sponsors</div> Fund open source developers </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"the_readme_project","context":"open_source","tag":"link","label":"the_readme_project_link_open_source_navbar"}" href="https://github.com/readme"> <div> <div class="color-fg-default h4">The ReadME Project</div> GitHub community articles </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 border-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="open-source-repositories-heading">Repositories</span> <ul class="list-style-none f5" aria-labelledby="open-source-repositories-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"topics","context":"open_source","tag":"link","label":"topics_link_open_source_navbar"}" href="https://github.com/topics"> Topics </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"trending","context":"open_source","tag":"link","label":"trending_link_open_source_navbar"}" href="https://github.com/trending"> Trending </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" 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6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg></button> </div> </div> </div> <scrollable-region data-labelled-by="custom-scopes-dialog-title"> <div data-view-component="true" class="Overlay-body"> <div data-target="custom-scopes.customScopesModalDialogFlash"></div> <div hidden class="create-custom-scope-form" data-target="custom-scopes.createCustomScopeForm"> <!-- '"` --><!-- </textarea></xmp> --></option></form><form id="custom-scopes-dialog-form" data-turbo="false" action="/search/custom_scopes" accept-charset="UTF-8" method="post"><input type="hidden" data-csrf="true" name="authenticity_token" value="VWZzoyDB3dfiGM9a365Tno5MAcaVNE8yPST3hirXbcMSyMMOjTWn8U23HGSYAzguaHDPki3boMhvf/YHCci4HA==" /> <div data-target="custom-scopes.customScopesModalDialogFlash"></div> <input type="hidden" 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Apache Arrow in Mojo\u003c/h1\u003e\u003ca id=\"user-content-in-progress-implementation-of-apache-arrow-in-mojo\" class=\"anchor\" aria-label=\"Permalink: In-progress implementation of Apache Arrow in Mojo\" href=\"#in-progress-implementation-of-apache-arrow-in-mojo\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eInitial motivation for this project was to learn the Mojo programming language and the best is to learn by doing. Since I've been involved in the Apache Arrow project for a while, I thought it would be a good idea to implement the Arrow specification in Mojo.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe implementation is far from being complete or usable in practice, but I prefer to share it its early stage so others can join the effort.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhat is Arrow?\u003c/h3\u003e\u003ca id=\"user-content-what-is-arrow\" class=\"anchor\" aria-label=\"Permalink: What is Arrow?\" href=\"#what-is-arrow\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://arrow.apache.org\" rel=\"nofollow\"\u003eApache Arrow\u003c/a\u003e is a cross-language development platform for in-memory data. It specifies a standardized language-independent columnar memory format for flat and hierarchical data, organized for efficient analytic operations on modern hardware like CPUs and GPUs.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhat is Mojo?\u003c/h3\u003e\u003ca id=\"user-content-what-is-mojo\" class=\"anchor\" aria-label=\"Permalink: What is Mojo?\" href=\"#what-is-mojo\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://www.modular.com/mojo\" rel=\"nofollow\"\u003eMojo\u003c/a\u003e is promising new programming language built on top of MLIR providing the expressiveness of Python, with the performance of systems programming languages.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhy Arrow in Mojo?\u003c/h3\u003e\u003ca id=\"user-content-why-arrow-in-mojo\" class=\"anchor\" aria-label=\"Permalink: Why Arrow in Mojo?\" href=\"#why-arrow-in-mojo\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eI find the Mojo lanauge really promising and Arrow should be a first-class citizen in Mojo's ecosystem. Since the language itself is still in its early stages, under heavy development, this Arrow implementation is still in an experimental phase.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCurrently implemented abstractions\u003c/h2\u003e\u003ca id=\"user-content-currently-implemented-abstractions\" class=\"anchor\" aria-label=\"Permalink: Currently implemented abstractions\" href=\"#currently-implemented-abstractions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eBuffer\u003c/code\u003e providing the memory management for contiguous memory regions.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eDataType\u003c/code\u003e for defining the \u003ccode\u003eArrow\u003c/code\u003e data types.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eArrayData\u003c/code\u003e as the common layout for all \u003ccode\u003eArrow\u003c/code\u003e arrays.\u003c/li\u003e\n\u003cli\u003eTyped array views for primitive, string and nested arrow arrays providing more convenient and efficient access to the underlying \u003ccode\u003eArrayData\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://arrow.apache.org/docs/format/CDataInterface.html\" rel=\"nofollow\"\u003eArrow C Data Interface\u003c/a\u003e to exchange arrow data between other implementations in a zero-copy manner, but only one direction is implemented for now.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExamples\u003c/h2\u003e\u003ca id=\"user-content-examples\" class=\"anchor\" aria-label=\"Permalink: Examples\" href=\"#examples\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCreating a primitive array\u003c/h3\u003e\u003ca id=\"user-content-creating-a-primitive-array\" class=\"anchor\" aria-label=\"Permalink: Creating a primitive array\" href=\"#creating-a-primitive-array\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-mojo notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"from firebolt.arrays import array, StringArray, ListArray, Int64Array\nfrom firebolt.dtypes import int8, bool_, list_\n\nvar a = array[int8](1, 2, 3, 4)\nvar b = array[bool_](True, False, True)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e firebolt.arrays \u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e array, StringArray, ListArray, Int64Array\n\u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e firebolt.dtypes \u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e int8, bool_, list_\n\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ea\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e array[int8](\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e4\u003c/span\u003e)\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eb\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e array[bool_](\u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003eFalse\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e)\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCreating a string array\u003c/h3\u003e\u003ca id=\"user-content-creating-a-string-array\" class=\"anchor\" aria-label=\"Permalink: Creating a string array\" href=\"#creating-a-string-array\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-mojo notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"var s = StringArray()\ns.unsafe_append(\u0026quot;hello\u0026quot;)\ns.unsafe_append(\u0026quot;world\u0026quot;)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003es\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e StringArray()\ns.unsafe_append(\u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003ehello\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e)\ns.unsafe_append(\u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003eworld\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e)\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eMore convenient APIs are planned to be added in the future.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCreating a list array\u003c/h3\u003e\u003ca id=\"user-content-creating-a-list-array\" class=\"anchor\" aria-label=\"Permalink: Creating a list array\" href=\"#creating-a-list-array\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-mojo notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"var ints = Int64Array()\nvar lists = ListArray(ints)\n\nints.append(1)\nints.append(2)\nints.append(3)\nlists.unsafe_append(True)\nassert_equal(len(lists), 1)\nassert_equal(lists.data.dtype, list_(int64))\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eints\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e Int64Array()\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003elists\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e ListArray(ints)\n\nints.append(\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e)\nints.append(\u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e)\nints.append(\u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e)\nlists.unsafe_append(\u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e)\nassert_equal(\u003cspan class=\"pl-c1\"\u003elen\u003c/span\u003e(lists), \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e)\nassert_equal(lists.data.dtype, list_(int64))\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eZero-copy access of a PyArrow array in Mojo\u003c/h3\u003e\u003ca id=\"user-content-zero-copy-access-of-a-pyarrow-array-in-mojo\" class=\"anchor\" aria-label=\"Permalink: Zero-copy access of a PyArrow array in Mojo\" href=\"#zero-copy-access-of-a-pyarrow-array-in-mojo\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFor more details see the \u003ca href=\"https://arrow.apache.org/docs/format/CDataInterface.html\" rel=\"nofollow\"\u003eArrow C Data Interface\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-mojo notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"var pa = Python.import_module(\u0026quot;pyarrow\u0026quot;)\nvar pyarr = pa.array(\n [1, 2, 3, 4, 5], mask=[False, False, False, False, True]\n)\n\nvar c_array = CArrowArray.from_pyarrow(pyarr)\nvar c_schema = CArrowSchema.from_pyarrow(pyarr.type)\n\nvar dtype = c_schema.to_dtype()\nassert_equal(dtype, int64)\nassert_equal(c_array.length, 5)\nassert_equal(c_array.null_count, 1)\nassert_equal(c_array.offset, 0)\nassert_equal(c_array.n_buffers, 2)\nassert_equal(c_array.n_children, 0)\n\nvar data = c_array.to_array(dtype)\nvar array = data.as_int64()\nassert_equal(array.bitmap[].size, 64)\nassert_equal(array.is_valid(0), True)\nassert_equal(array.is_valid(1), True)\nassert_equal(array.is_valid(2), True)\nassert_equal(array.is_valid(3), True)\nassert_equal(array.is_valid(4), False)\nassert_equal(array.unsafe_get(0), 1)\nassert_equal(array.unsafe_get(1), 2)\nassert_equal(array.unsafe_get(2), 3)\nassert_equal(array.unsafe_get(3), 4)\nassert_equal(array.unsafe_get(4), 0)\n\narray.unsafe_set(0, 10)\nassert_equal(array.unsafe_get(0), 10)\nassert_equal(str(pyarr), \u0026quot;[\\n 10,\\n 2,\\n 3,\\n 4,\\n null\\n]\u0026quot;)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003epa\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e Python.import_module(\u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003epyarrow\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e)\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003epyarr\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e pa.array(\n [\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e4\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e5\u003c/span\u003e], \u003cspan class=\"pl-v\"\u003emask\u003c/span\u003e\u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e[\u003cspan class=\"pl-c1\"\u003eFalse\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003eFalse\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003eFalse\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003eFalse\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e]\n)\n\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ec_array\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e CArrowArray.from_pyarrow(pyarr)\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ec_schema\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e CArrowSchema.from_pyarrow(pyarr.type)\n\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003edtype\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e c_schema.to_dtype()\nassert_equal(dtype, int64)\nassert_equal(c_array.length, \u003cspan class=\"pl-c1\"\u003e5\u003c/span\u003e)\nassert_equal(c_array.null_count, \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e)\nassert_equal(c_array.offset, \u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e)\nassert_equal(c_array.n_buffers, \u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e)\nassert_equal(c_array.n_children, \u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e)\n\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003edata\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e c_array.to_array(dtype)\n\u003cspan class=\"pl-k\"\u003evar\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003earray\u003c/span\u003e \u003cspan class=\"pl-k\"\u003e=\u003c/span\u003e data.as_int64()\nassert_equal(array.bitmap[].size, \u003cspan class=\"pl-c1\"\u003e64\u003c/span\u003e)\nassert_equal(array.is_valid(\u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e)\nassert_equal(array.is_valid(\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e)\nassert_equal(array.is_valid(\u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e)\nassert_equal(array.is_valid(\u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003eTrue\u003c/span\u003e)\nassert_equal(array.is_valid(\u003cspan class=\"pl-c1\"\u003e4\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003eFalse\u003c/span\u003e)\nassert_equal(array.unsafe_get(\u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e)\nassert_equal(array.unsafe_get(\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e)\nassert_equal(array.unsafe_get(\u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e)\nassert_equal(array.unsafe_get(\u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003e4\u003c/span\u003e)\nassert_equal(array.unsafe_get(\u003cspan class=\"pl-c1\"\u003e4\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e)\n\narray.unsafe_set(\u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e10\u003c/span\u003e)\nassert_equal(array.unsafe_get(\u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e), \u003cspan class=\"pl-c1\"\u003e10\u003c/span\u003e)\nassert_equal(\u003cspan class=\"pl-c1\"\u003estr\u003c/span\u003e(pyarr), \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e[\u003cspan class=\"pl-cce\"\u003e\\n\u003c/span\u003e 10,\u003cspan class=\"pl-cce\"\u003e\\n\u003c/span\u003e 2,\u003cspan class=\"pl-cce\"\u003e\\n\u003c/span\u003e 3,\u003cspan class=\"pl-cce\"\u003e\\n\u003c/span\u003e 4,\u003cspan class=\"pl-cce\"\u003e\\n\u003c/span\u003e null\u003cspan class=\"pl-cce\"\u003e\\n\u003c/span\u003e]\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e)\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRough edges and limitations\u003c/h2\u003e\u003ca id=\"user-content-rough-edges-and-limitations\" class=\"anchor\" aria-label=\"Permalink: Rough edges and limitations\" href=\"#rough-edges-and-limitations\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSo far the implementation has been focused to provide a solid foundation for further development, not for memory efficiency, performance or completeness.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eA couple of notable limitations:\u003c/p\u003e\n\u003col dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eThe chosen abstractions may not be ideal, but:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003emojo lacks support for dynamic dispatch at the moment\u003c/li\u003e\n\u003cli\u003evariant elements must be copyable\u003c/li\u003e\n\u003cli\u003ereferences and lifetimes are not hardened yet\u003c/li\u003e\n\u003cli\u003eexpressing nested data types is not straightforward\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eDue to these reasons polymorphism is achieved by defining a common layout for type hierarchies and providing specialized views for each child type. This approach seems to work well for nested \u003ccode\u003eDataType\u003c/code\u003e and \u003ccode\u003eArray\u003c/code\u003e types and the implementation can be continued while \u003ccode\u003eMojo\u003c/code\u003e gains the necessary features to rethink theses abstractions.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eC Data Interface\u003c/code\u003e doesn't call the release callbacks yet and only consuming arrow data is implemented for now because a \u003ccode\u003eMojo\u003c/code\u003e callback cannot be passed to a \u003ccode\u003eC\u003c/code\u003e function yet. As mojo matures, this limitation will be certainly addressed.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eTesting of the conformance against the \u003ccode\u003eArrow\u003c/code\u003e specification is done by reading arrow data from the python implementation \u003ccode\u003ePyArrow\u003c/code\u003e since \u003ccode\u003eMojo\u003c/code\u003e can already call python functions. If the project manages to evolve further, it should be wired into the arrow integration testing suite, but first that requires a \u003ccode\u003eJSON\u003c/code\u003e library in \u003ccode\u003eMojo\u003c/code\u003e.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eOnly boolean, numeric, string, list and struct datatypes are supported for now since these cover most of the implementation complexity. Support for the rest of the arrow data types can be added incrementally.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eA convenient API hasn't been designed yet, preferably that should be tackled once the implementation is more mature.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eNo \u003ccode\u003eChunkedArray\u003c/code\u003es, \u003ccode\u003eRecordBatch\u003c/code\u003ees, \u003ccode\u003eTable\u003c/code\u003es are implemented yet, but soon they will be.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eNo CI has been set up yet, but it is going to be in focus really soon.\u003c/p\u003e\n\u003c/li\u003e\n\u003c/ol\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDevelopment\u003c/h2\u003e\u003ca id=\"user-content-development\" class=\"anchor\" aria-label=\"Permalink: Development\" href=\"#development\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eI shared the implementation it its current state so others can join the effort.\nIf the project manages to evolve, ideally it should be donated to the upstream Apache Arrow project.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eGiven an existing Mojo installation the tests can be run with:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"cd firebolt\nmojo test firebolt -I .\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c1\"\u003ecd\u003c/span\u003e firebolt\nmojo \u003cspan class=\"pl-c1\"\u003etest\u003c/span\u003e firebolt -I \u003cspan class=\"pl-c1\"\u003e.\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTested with nightly \u003ccode\u003eMojo\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"$ mojo --version\nmojo 2024.7.1805 (0a697965)\"\u003e\u003cpre\u003e$ mojo --version\nmojo 2024.7.1805 (0a697965)\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReferences\u003c/h2\u003e\u003ca id=\"user-content-references\" class=\"anchor\" aria-label=\"Permalink: References\" href=\"#references\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/mojo-data/arrow.mojo\"\u003eAnother effort to implement Arrow in Mojo\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"In-progress implementation of Apache Arrow in Mojo","anchor":"in-progress-implementation-of-apache-arrow-in-mojo","htmlText":"In-progress implementation of Apache Arrow in Mojo"},{"level":3,"text":"What is Arrow?","anchor":"what-is-arrow","htmlText":"What is Arrow?"},{"level":3,"text":"What is Mojo?","anchor":"what-is-mojo","htmlText":"What is Mojo?"},{"level":3,"text":"Why Arrow in Mojo?","anchor":"why-arrow-in-mojo","htmlText":"Why Arrow in Mojo?"},{"level":2,"text":"Currently implemented abstractions","anchor":"currently-implemented-abstractions","htmlText":"Currently implemented abstractions"},{"level":2,"text":"Examples","anchor":"examples","htmlText":"Examples"},{"level":3,"text":"Creating a primitive array","anchor":"creating-a-primitive-array","htmlText":"Creating a primitive array"},{"level":3,"text":"Creating a string array","anchor":"creating-a-string-array","htmlText":"Creating a string array"},{"level":3,"text":"Creating a list array","anchor":"creating-a-list-array","htmlText":"Creating a list array"},{"level":3,"text":"Zero-copy access of a PyArrow array in Mojo","anchor":"zero-copy-access-of-a-pyarrow-array-in-mojo","htmlText":"Zero-copy access of a PyArrow array in Mojo"},{"level":2,"text":"Rough edges and limitations","anchor":"rough-edges-and-limitations","htmlText":"Rough edges and limitations"},{"level":2,"text":"Development","anchor":"development","htmlText":"Development"},{"level":2,"text":"References","anchor":"references","htmlText":"References"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fkszucs%2Ffirebolt"}},{"displayName":"LICENSE.txt","repoName":"firebolt","refName":"main","path":"LICENSE.txt","preferredFileType":"license","tabName":"Apache-2.0","richText":null,"loaded":false,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":null,"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fkszucs%2Ffirebolt"}}],"overviewFilesProcessingTime":0}},"appPayload":{"helpUrl":"https://docs.github.com","findFileWorkerPath":"/assets-cdn/worker/find-file-worker-7d7eb7c71814.js","findInFileWorkerPath":"/assets-cdn/worker/find-in-file-worker-96e76d5fdb2c.js","githubDevUrl":null,"enabled_features":{"copilot_workspace":null,"code_nav_ui_events":false,"overview_shared_code_dropdown_button":false,"react_blob_overlay":false,"accessible_code_button":true,"github_models_repo_integration":false}}}}</script> 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QkQOb js-snippet-clipboard-copy-unpositioned undefined" data-hpc="true"><article class="markdown-body entry-content container-lg" itemprop="text"><div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">In-progress implementation of Apache Arrow in Mojo</h1><a id="user-content-in-progress-implementation-of-apache-arrow-in-mojo" class="anchor" aria-label="Permalink: In-progress implementation of Apache Arrow in Mojo" href="#in-progress-implementation-of-apache-arrow-in-mojo"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Initial motivation for this project was to learn the Mojo programming language and the best is to learn by doing. Since I've been involved in the Apache Arrow project for a while, I thought it would be a good idea to implement the Arrow specification in Mojo.</p> <p dir="auto">The implementation is far from being complete or usable in practice, but I prefer to share it its early stage so others can join the effort.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">What is Arrow?</h3><a id="user-content-what-is-arrow" class="anchor" aria-label="Permalink: What is Arrow?" href="#what-is-arrow"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://arrow.apache.org" rel="nofollow">Apache Arrow</a> is a cross-language development platform for in-memory data. It specifies a standardized language-independent columnar memory format for flat and hierarchical data, organized for efficient analytic operations on modern hardware like CPUs and GPUs.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">What is Mojo?</h3><a id="user-content-what-is-mojo" class="anchor" aria-label="Permalink: What is Mojo?" href="#what-is-mojo"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://www.modular.com/mojo" rel="nofollow">Mojo</a> is promising new programming language built on top of MLIR providing the expressiveness of Python, with the performance of systems programming languages.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Why Arrow in Mojo?</h3><a id="user-content-why-arrow-in-mojo" class="anchor" aria-label="Permalink: Why Arrow in Mojo?" href="#why-arrow-in-mojo"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">I find the Mojo lanauge really promising and Arrow should be a first-class citizen in Mojo's ecosystem. Since the language itself is still in its early stages, under heavy development, this Arrow implementation is still in an experimental phase.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Currently implemented abstractions</h2><a id="user-content-currently-implemented-abstractions" class="anchor" aria-label="Permalink: Currently implemented abstractions" href="#currently-implemented-abstractions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>Buffer</code> providing the memory management for contiguous memory regions.</li> <li><code>DataType</code> for defining the <code>Arrow</code> data types.</li> <li><code>ArrayData</code> as the common layout for all <code>Arrow</code> arrays.</li> <li>Typed array views for primitive, string and nested arrow arrays providing more convenient and efficient access to the underlying <code>ArrayData</code>.</li> <li><a href="https://arrow.apache.org/docs/format/CDataInterface.html" rel="nofollow">Arrow C Data Interface</a> to exchange arrow data between other implementations in a zero-copy manner, but only one direction is implemented for now.</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Examples</h2><a id="user-content-examples" class="anchor" aria-label="Permalink: Examples" href="#examples"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Creating a primitive array</h3><a id="user-content-creating-a-primitive-array" class="anchor" aria-label="Permalink: Creating a primitive array" href="#creating-a-primitive-array"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-mojo notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="from firebolt.arrays import array, StringArray, ListArray, Int64Array from firebolt.dtypes import int8, bool_, list_ var a = array[int8](1, 2, 3, 4) var b = array[bool_](True, False, True)"><pre><span class="pl-k">from</span> firebolt.arrays <span class="pl-k">import</span> array, StringArray, ListArray, Int64Array <span class="pl-k">from</span> firebolt.dtypes <span class="pl-k">import</span> int8, bool_, list_ <span class="pl-k">var</span> <span class="pl-smi">a</span> <span class="pl-k">=</span> array[int8](<span class="pl-c1">1</span>, <span class="pl-c1">2</span>, <span class="pl-c1">3</span>, <span class="pl-c1">4</span>) <span class="pl-k">var</span> <span class="pl-smi">b</span> <span class="pl-k">=</span> array[bool_](<span class="pl-c1">True</span>, <span class="pl-c1">False</span>, <span class="pl-c1">True</span>)</pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Creating a string array</h3><a id="user-content-creating-a-string-array" class="anchor" aria-label="Permalink: Creating a string array" href="#creating-a-string-array"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-mojo notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="var s = StringArray() s.unsafe_append("hello") s.unsafe_append("world")"><pre><span class="pl-k">var</span> <span class="pl-smi">s</span> <span class="pl-k">=</span> StringArray() s.unsafe_append(<span class="pl-s"><span class="pl-pds">"</span>hello<span class="pl-pds">"</span></span>) s.unsafe_append(<span class="pl-s"><span class="pl-pds">"</span>world<span class="pl-pds">"</span></span>)</pre></div> <p dir="auto">More convenient APIs are planned to be added in the future.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Creating a list array</h3><a id="user-content-creating-a-list-array" class="anchor" aria-label="Permalink: Creating a list array" href="#creating-a-list-array"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-mojo notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="var ints = Int64Array() var lists = ListArray(ints) ints.append(1) ints.append(2) ints.append(3) lists.unsafe_append(True) assert_equal(len(lists), 1) assert_equal(lists.data.dtype, list_(int64))"><pre><span class="pl-k">var</span> <span class="pl-smi">ints</span> <span class="pl-k">=</span> Int64Array() <span class="pl-k">var</span> <span class="pl-smi">lists</span> <span class="pl-k">=</span> ListArray(ints) ints.append(<span class="pl-c1">1</span>) ints.append(<span class="pl-c1">2</span>) ints.append(<span class="pl-c1">3</span>) lists.unsafe_append(<span class="pl-c1">True</span>) assert_equal(<span class="pl-c1">len</span>(lists), <span class="pl-c1">1</span>) assert_equal(lists.data.dtype, list_(int64))</pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Zero-copy access of a PyArrow array in Mojo</h3><a id="user-content-zero-copy-access-of-a-pyarrow-array-in-mojo" class="anchor" aria-label="Permalink: Zero-copy access of a PyArrow array in Mojo" href="#zero-copy-access-of-a-pyarrow-array-in-mojo"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">For more details see the <a href="https://arrow.apache.org/docs/format/CDataInterface.html" rel="nofollow">Arrow C Data Interface</a>.</p> <div class="highlight highlight-source-mojo notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="var pa = Python.import_module("pyarrow") var pyarr = pa.array( [1, 2, 3, 4, 5], mask=[False, False, False, False, True] ) var c_array = CArrowArray.from_pyarrow(pyarr) var c_schema = CArrowSchema.from_pyarrow(pyarr.type) var dtype = c_schema.to_dtype() assert_equal(dtype, int64) assert_equal(c_array.length, 5) assert_equal(c_array.null_count, 1) assert_equal(c_array.offset, 0) assert_equal(c_array.n_buffers, 2) assert_equal(c_array.n_children, 0) var data = c_array.to_array(dtype) var array = data.as_int64() assert_equal(array.bitmap[].size, 64) assert_equal(array.is_valid(0), True) assert_equal(array.is_valid(1), True) assert_equal(array.is_valid(2), True) assert_equal(array.is_valid(3), True) assert_equal(array.is_valid(4), False) assert_equal(array.unsafe_get(0), 1) assert_equal(array.unsafe_get(1), 2) assert_equal(array.unsafe_get(2), 3) assert_equal(array.unsafe_get(3), 4) assert_equal(array.unsafe_get(4), 0) array.unsafe_set(0, 10) assert_equal(array.unsafe_get(0), 10) assert_equal(str(pyarr), "[\n 10,\n 2,\n 3,\n 4,\n null\n]")"><pre><span class="pl-k">var</span> <span class="pl-smi">pa</span> <span class="pl-k">=</span> Python.import_module(<span class="pl-s"><span class="pl-pds">"</span>pyarrow<span class="pl-pds">"</span></span>) <span class="pl-k">var</span> <span class="pl-smi">pyarr</span> <span class="pl-k">=</span> pa.array( [<span class="pl-c1">1</span>, <span class="pl-c1">2</span>, <span class="pl-c1">3</span>, <span class="pl-c1">4</span>, <span class="pl-c1">5</span>], <span class="pl-v">mask</span><span class="pl-k">=</span>[<span class="pl-c1">False</span>, <span class="pl-c1">False</span>, <span class="pl-c1">False</span>, <span class="pl-c1">False</span>, <span class="pl-c1">True</span>] ) <span class="pl-k">var</span> <span class="pl-smi">c_array</span> <span class="pl-k">=</span> CArrowArray.from_pyarrow(pyarr) <span class="pl-k">var</span> <span class="pl-smi">c_schema</span> <span class="pl-k">=</span> CArrowSchema.from_pyarrow(pyarr.type) <span class="pl-k">var</span> <span class="pl-smi">dtype</span> <span class="pl-k">=</span> c_schema.to_dtype() assert_equal(dtype, int64) assert_equal(c_array.length, <span class="pl-c1">5</span>) assert_equal(c_array.null_count, <span class="pl-c1">1</span>) assert_equal(c_array.offset, <span class="pl-c1">0</span>) assert_equal(c_array.n_buffers, <span class="pl-c1">2</span>) assert_equal(c_array.n_children, <span class="pl-c1">0</span>) <span class="pl-k">var</span> <span class="pl-smi">data</span> <span class="pl-k">=</span> c_array.to_array(dtype) <span class="pl-k">var</span> <span class="pl-smi">array</span> <span class="pl-k">=</span> data.as_int64() assert_equal(array.bitmap[].size, <span class="pl-c1">64</span>) assert_equal(array.is_valid(<span class="pl-c1">0</span>), <span class="pl-c1">True</span>) assert_equal(array.is_valid(<span class="pl-c1">1</span>), <span class="pl-c1">True</span>) assert_equal(array.is_valid(<span class="pl-c1">2</span>), <span class="pl-c1">True</span>) assert_equal(array.is_valid(<span class="pl-c1">3</span>), <span class="pl-c1">True</span>) assert_equal(array.is_valid(<span class="pl-c1">4</span>), <span class="pl-c1">False</span>) assert_equal(array.unsafe_get(<span class="pl-c1">0</span>), <span class="pl-c1">1</span>) assert_equal(array.unsafe_get(<span class="pl-c1">1</span>), <span class="pl-c1">2</span>) assert_equal(array.unsafe_get(<span class="pl-c1">2</span>), <span class="pl-c1">3</span>) assert_equal(array.unsafe_get(<span class="pl-c1">3</span>), <span class="pl-c1">4</span>) assert_equal(array.unsafe_get(<span class="pl-c1">4</span>), <span class="pl-c1">0</span>) array.unsafe_set(<span class="pl-c1">0</span>, <span class="pl-c1">10</span>) assert_equal(array.unsafe_get(<span class="pl-c1">0</span>), <span class="pl-c1">10</span>) assert_equal(<span class="pl-c1">str</span>(pyarr), <span class="pl-s"><span class="pl-pds">"</span>[<span class="pl-cce">\n</span> 10,<span class="pl-cce">\n</span> 2,<span class="pl-cce">\n</span> 3,<span class="pl-cce">\n</span> 4,<span class="pl-cce">\n</span> null<span class="pl-cce">\n</span>]<span class="pl-pds">"</span></span>)</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Rough edges and limitations</h2><a id="user-content-rough-edges-and-limitations" class="anchor" aria-label="Permalink: Rough edges and limitations" href="#rough-edges-and-limitations"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">So far the implementation has been focused to provide a solid foundation for further development, not for memory efficiency, performance or completeness.</p> <p dir="auto">A couple of notable limitations:</p> <ol dir="auto"> <li> <p dir="auto">The chosen abstractions may not be ideal, but:</p> <ul dir="auto"> <li>mojo lacks support for dynamic dispatch at the moment</li> <li>variant elements must be copyable</li> <li>references and lifetimes are not hardened yet</li> <li>expressing nested data types is not straightforward</li> </ul> <p dir="auto">Due to these reasons polymorphism is achieved by defining a common layout for type hierarchies and providing specialized views for each child type. This approach seems to work well for nested <code>DataType</code> and <code>Array</code> types and the implementation can be continued while <code>Mojo</code> gains the necessary features to rethink theses abstractions.</p> </li> <li> <p dir="auto">The <code>C Data Interface</code> doesn't call the release callbacks yet and only consuming arrow data is implemented for now because a <code>Mojo</code> callback cannot be passed to a <code>C</code> function yet. As mojo matures, this limitation will be certainly addressed.</p> </li> <li> <p dir="auto">Testing of the conformance against the <code>Arrow</code> specification is done by reading arrow data from the python implementation <code>PyArrow</code> since <code>Mojo</code> can already call python functions. If the project manages to evolve further, it should be wired into the arrow integration testing suite, but first that requires a <code>JSON</code> library in <code>Mojo</code>.</p> </li> <li> <p dir="auto">Only boolean, numeric, string, list and struct datatypes are supported for now since these cover most of the implementation complexity. Support for the rest of the arrow data types can be added incrementally.</p> </li> <li> <p dir="auto">A convenient API hasn't been designed yet, preferably that should be tackled once the implementation is more mature.</p> </li> <li> <p dir="auto">No <code>ChunkedArray</code>s, <code>RecordBatch</code>es, <code>Table</code>s are implemented yet, but soon they will be.</p> </li> <li> <p dir="auto">No CI has been set up yet, but it is going to be in focus really soon.</p> </li> </ol> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Development</h2><a id="user-content-development" class="anchor" aria-label="Permalink: Development" href="#development"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">I shared the implementation it its current state so others can join the effort. If the project manages to evolve, ideally it should be donated to the upstream Apache Arrow project.</p> <p dir="auto">Given an existing Mojo installation the tests can be run with:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="cd firebolt mojo test firebolt -I ."><pre><span class="pl-c1">cd</span> firebolt mojo <span class="pl-c1">test</span> firebolt -I <span class="pl-c1">.</span></pre></div> <p dir="auto">Tested with nightly <code>Mojo</code>:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="$ mojo --version mojo 2024.7.1805 (0a697965)"><pre>$ mojo --version mojo 2024.7.1805 (0a697965)</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">References</h2><a id="user-content-references" class="anchor" aria-label="Permalink: References" href="#references"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://github.com/mojo-data/arrow.mojo">Another effort to implement Arrow in Mojo</a></li> </ul> </article></div></div></div></div></div> <!-- --> <!-- --> <script type="application/json" id="__PRIMER_DATA_:R0:__">{"resolvedServerColorMode":"day"}</script></div> </react-partial> 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