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class="padding-section-large is--hero-cadence-new"><div class="hero_grid is--cadence-new"><div class="hero-content"><h1 data-w-id="3477c412-5393-bb35-9564-b753122744d6" class="hero-title">Cadence</h1><div class="max-width-small"><div class="text-size-medium">The secure, resource-oriented smart contract language built for powerful onchain logic.</div></div><div class="buttons__wrapper is--align-left"><a href="https://cadence-lang.org/docs/tutorial/first-steps" target="_blank" class="button-base is--green w-inline-block"><div class="button-content"><div class="text-size-small">Start Learning Cadence</div></div></a><a href="https://developers.flow.com/cadence" target="_blank" class="button-base is--white w-inline-block"><div class="button-content"><div class="text-size-small">Read the Docs</div></div></a></div></div></div></div></div></div></section><section class="section-wrapper bg-color-gray-100"><div class="padding-global"><div class="container-xlarge"><div class="padding-section-xsmall"><div class="cadence-new__grid-intro"><h2 data-w-id="1426b63c-51f8-2e5a-ba93-ee6060b5e9ef" class="text-size-medium text-style-allcaps">Discover Cadence</h2><div class="cadence-new__toc-wrapper"><ul role="list" class="cadence-new__toc-list"><li class="cadence-new__toc-list-item"><a href="#what-is-cadence" class="cadence-new__toc-link">What is Cadence</a></li><li class="cadence-new__toc-list-item"><a href="#why-cadence" class="cadence-new__toc-link">Why Cadence?</a></li><li class="cadence-new__toc-list-item"><a href="#core-features" class="cadence-new__toc-link">Cadence Features</a></li><li class="cadence-new__toc-list-item is--last"><a href="#get-started" class="cadence-new__toc-link">Start Building with Cadence</a></li></ul></div></div></div></div></div></section></div><section id="what-is-cadence" class="section-wrapper"><div class="padding-global"><div class="container-xlarge"><div class="padding-section-large"><div class="cadence-new__grid-intro"><h2 class="text-size-medium text-style-allcaps">What is Cadence</h2><div class="content-block is--vertical-medium"><p class="text-size-regular text-color-gray-700">Cadence is a resource-oriented, high-level programming language designed for developing smart contracts. It prioritizes <strong>safety, readability, and ease of use</strong>, making it an excellent choice for developers looking to build secure and scalable blockchain applications.</p><p class="text-size-regular text-color-gray-700">Cadence introduces a novel approach to smart contract development, leveraging strong static typing, capability-based security, and an intuitive syntax inspired by Swift and Rust. With built-in protections against common vulnerabilities like reentrancy attacks and unauthorized asset transfers, Cadence ensures that smart contracts remain secure and predictable.</p><div class="divider-line"></div><p class="text-size-large">Think of Cadence as the next-gen language for creating powerful onchain logic and seamless experience apps — without compromising security or composability.</p><div class="divider-line"></div></div></div></div></div></div></section><section id="why-cadence" class="section-wrapper"><div class="padding-global"><div class="padding-section-large"><div class="container-xlarge"><div class="text-align-center"><div class="flex-vertical-center"><h2 class="heading-xxlarge text-style-allcaps"><strong>Why Cadence?</strong></h2><div class="spacer-xsmall"></div><div class="max-width-small"><div>We built Cadence to solve the problems that existing smart contract languages (like Solidity) couldn’t:</div></div></div></div><div class="spacer-large"></div><div class="cadence-new__grid-benefits"><div class="cadence-new__benefits-card"><div class="cadence-new__benefits-icon-wrap"><div class="cadence-new__benefits-icon-embeed w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M9 11.4999L11 13.4999L15.5 8.99987M20 11.9999C20 16.9083 14.646 20.4783 12.698 21.6147C12.4766 21.7439 12.3659 21.8085 12.2097 21.842C12.0884 21.868 11.9116 21.868 11.7903 21.842C11.6341 21.8085 11.5234 21.7439 11.302 21.6147C9.35401 20.4783 4 16.9083 4 11.9999V7.21747C4 6.41796 4 6.0182 4.13076 5.67457C4.24628 5.37101 4.43398 5.10015 4.67766 4.8854C4.9535 4.64231 5.3278 4.50195 6.07641 4.22122L11.4382 2.21054C11.6461 2.13258 11.75 2.0936 11.857 2.07815C11.9518 2.06444 12.0482 2.06444 12.143 2.07815C12.2499 2.0936 12.3539 2.13258 12.5618 2.21054L17.9236 4.22122C18.6722 4.50195 19.0465 4.64231 19.3223 4.8854C19.566 5.10015 19.7537 5.37101 19.8692 5.67457C20 6.0182 20 6.41796 20 7.21747V11.9999Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div></div><div class="text-size-large text-weight-semibold">Secure by Design</div><div>Cadence uses resource types and type safety to prevent exploits and bugs.</div></div><div class="cadence-new__benefits-card"><div class="cadence-new__benefits-icon-wrap"><div class="cadence-new__benefits-icon-embeed w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M22 9H2M14 17.5L16.5 15L14 12.5M10 12.5L7.5 15L10 17.5M2 7.8L2 16.2C2 17.8802 2 18.7202 2.32698 19.362C2.6146 19.9265 3.07354 20.3854 3.63803 20.673C4.27976 21 5.11984 21 6.8 21H17.2C18.8802 21 19.7202 21 20.362 20.673C20.9265 20.3854 21.3854 19.9265 21.673 19.362C22 18.7202 22 17.8802 22 16.2V7.8C22 6.11984 22 5.27977 21.673 4.63803C21.3854 4.07354 20.9265 3.6146 20.362 3.32698C19.7202 3 18.8802 3 17.2 3L6.8 3C5.11984 3 4.27976 3 3.63803 3.32698C3.07354 3.6146 2.6146 4.07354 2.32698 4.63803C2 5.27976 2 6.11984 2 7.8Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div></div><div class="text-size-large text-weight-semibold">Developer-Friendly</div><div>A readable, modern syntax with built-in guardrails for safer development.</div></div><div class="cadence-new__benefits-card"><div class="cadence-new__benefits-icon-wrap"><div class="cadence-new__benefits-icon-embeed w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M7 9.50006L2 12.0001L11.6422 16.8212C11.7734 16.8868 11.839 16.9196 11.9078 16.9325C11.9687 16.9439 12.0313 16.9439 12.0922 16.9325C12.161 16.9196 12.2266 16.8868 12.3578 16.8212L22 12.0001L17 9.50006M7 14.5001L2 17.0001L11.6422 21.8212C11.7734 21.8868 11.839 21.9196 11.9078 21.9325C11.9687 21.9439 12.0313 21.9439 12.0922 21.9325C12.161 21.9196 12.2266 21.8868 12.3578 21.8212L22 17.0001L17 14.5001M2 7.00006L11.6422 2.17895C11.7734 2.11336 11.839 2.08056 11.9078 2.06766C11.9687 2.05622 12.0313 2.05622 12.0922 2.06766C12.161 2.08056 12.2266 2.11336 12.3578 2.17895L22 7.00006L12.3578 11.8212C12.2266 11.8868 12.161 11.9196 12.0922 11.9325C12.0313 11.9439 11.9687 11.9439 11.9078 11.9325C11.839 11.9196 11.7734 11.8868 11.6422 11.8212L2 7.00006Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div></div><div class="text-size-large text-weight-semibold">Composable & Scalable</div><div>Designed for interoperability and seamless contract upgrades.</div></div><div class="cadence-new__benefits-card"><div class="cadence-new__benefits-icon-wrap"><div class="cadence-new__benefits-icon-embeed w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M20 10V6.8C20 5.11984 20 4.27976 19.673 3.63803C19.3854 3.07354 18.9265 2.6146 18.362 2.32698C17.7202 2 16.8802 2 15.2 2H8.8C7.11984 2 6.27976 2 5.63803 2.32698C5.07354 2.6146 4.6146 3.07354 4.32698 3.63803C4 4.27976 4 5.11984 4 6.8V17.2C4 18.8802 4 19.7202 4.32698 20.362C4.6146 20.9265 5.07354 21.3854 5.63803 21.673C6.27976 22 7.11984 22 8.8 22H10.5M13 11H8M11 15H8M16 7H8M19.25 17V15.25C19.25 14.2835 18.4665 13.5 17.5 13.5C16.5335 13.5 15.75 14.2835 15.75 15.25V17M15.6 21H19.4C19.9601 21 20.2401 21 20.454 20.891C20.6422 20.7951 20.7951 20.6422 20.891 20.454C21 20.2401 21 19.9601 21 19.4V18.6C21 18.0399 21 17.7599 20.891 17.546C20.7951 17.3578 20.6422 17.2049 20.454 17.109C20.2401 17 19.9601 17 19.4 17H15.6C15.0399 17 14.7599 17 14.546 17.109C14.3578 17.2049 14.2049 17.3578 14.109 17.546C14 17.7599 14 18.0399 14 18.6V19.4C14 19.9601 14 20.2401 14.109 20.454C14.2049 20.6422 14.3578 20.7951 14.546 20.891C14.7599 21 15.0399 21 15.6 21Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div></div><div class="text-size-large text-weight-semibold">Real Ownership</div><div>Assets like NFTs and tokens are first-class citizens, with true onchain control.</div></div><div class="cadence-new__benefits-card"><div class="cadence-new__benefits-icon-wrap"><div class="cadence-new__benefits-icon-embeed w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M15.0505 9H5.5C4.11929 9 3 7.88071 3 6.5C3 5.11929 4.11929 4 5.5 4H15.0505M8.94949 20H18.5C19.8807 20 21 18.8807 21 17.5C21 16.1193 19.8807 15 18.5 15H8.94949M3 17.5C3 19.433 4.567 21 6.5 21C8.433 21 10 19.433 10 17.5C10 15.567 8.433 14 6.5 14C4.567 14 3 15.567 3 17.5ZM21 6.5C21 8.433 19.433 10 17.5 10C15.567 10 14 8.433 14 6.5C14 4.567 15.567 3 17.5 3C19.433 3 21 4.567 21 6.5Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div></div><div class="text-size-large text-weight-semibold">Fine-Grained Permissions</div><div>Built-in capabilities make role-based access and temporary permissions easy to manage and enforce.</div></div></div></div></div></div></section><section id="core-features" class="section-wrapper"><div class="padding-global"><div class="padding-section-large"><div class="container-xlarge"><div class="text-align-center"><div class="flex-vertical-center"><div class="image-wrapper is--cadence-new-features"><img src="https://cdn.prod.website-files.com/5f734f4dbd95382f4fdfa0ea/67e5af4d56d5c02b684bd8ce_flow-cadence-features.png" loading="lazy" alt="" class="ratio-3x2"/></div><div class="spacer-xsmall"></div><div class="max-width-medium"><h2 class="heading-xxlarge text-style-allcaps"><strong>Powerful Features Built for Web3 Developers</strong></h2></div><div class="spacer-xsmall"></div><div class="max-width-medium-small"><div class="text-size-medium">Cadence 1.0 is packed with smart contract features designed for <span class="text-style-nowrap">real-world</span> scalability, security, and UX.</div></div></div></div><div class="spacer-xxlarge"></div><div><div class="text-align-center"><div><div class="flex-vertical-center"><div class="max-width-medium"><h3 class="heading-medium"><strong>Core Language Concepts</strong></h3></div></div></div></div><div class="spacer-large"></div><div class="features-tabs__component"><div id="w-node-c5f0c730-9645-4990-8e1c-5d7f92ab77b5-f5ced840" class="features-tabs__navigation"><div class="features-tabs__tab-item is--active"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M20.5 7.27783L12 12.0001M12 12.0001L3.49997 7.27783M12 12.0001L12 21.5001M14 20.889L12.777 21.5684C12.4934 21.726 12.3516 21.8047 12.2015 21.8356C12.0685 21.863 11.9315 21.863 11.7986 21.8356C11.6484 21.8047 11.5066 21.726 11.223 21.5684L3.82297 17.4573C3.52346 17.2909 3.37368 17.2077 3.26463 17.0893C3.16816 16.9847 3.09515 16.8606 3.05048 16.7254C3 16.5726 3 16.4013 3 16.0586V7.94153C3 7.59889 3 7.42757 3.05048 7.27477C3.09515 7.13959 3.16816 7.01551 3.26463 6.91082C3.37368 6.79248 3.52345 6.70928 3.82297 6.54288L11.223 2.43177C11.5066 2.27421 11.6484 2.19543 11.7986 2.16454C11.9315 2.13721 12.0685 2.13721 12.2015 2.16454C12.3516 2.19543 12.4934 2.27421 12.777 2.43177L20.177 6.54288C20.4766 6.70928 20.6263 6.79248 20.7354 6.91082C20.8318 7.01551 20.9049 7.13959 20.9495 7.27477C21 7.42757 21 7.59889 21 7.94153L21 12.5001M7.5 4.50008L16.5 9.50008M19 21.0001V15.0001M16 18.0001H22" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Resource-Oriented Programming</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li>Unique resource types that prevent duplication or loss of assets.</li><li>Ensures safe ownership transfers with the <em class="cadence-new__code-span">move (<-)</em> operator.</li></ul><p><a href="https://cadence-lang.org/docs/language/resources" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Object users store in their account, represents currency</span><span> </span>resource Vault { <span> access(all) </span><span style="color:#7928a1">var</span><span> balance: UFix64 </span> <span> </span><span class="hljs-function" style="color:#007faa">init</span><span class="hljs-function">(</span><span class="hljs-function" style="color:#aa5d00">balance: UFix64</span><span class="hljs-function">)</span><span> { </span> self.balance = balance } } <span></span><span style="color:#7928a1">let</span><span> vault <- create Vault(balance: </span><span style="color:#aa5d00">10.0</span><span>) </span><span style="color:#696969">// creation</span><span> </span><span></span><span style="color:#7928a1">let</span><span> myVault <- vault </span><span style="color:#696969">// move with <-</span><span> </span><span>vault.balance </span><span style="color:#696969">// Invalid: Cannot access: The old vault was moved</span><span> </span><span></span><span style="color:#7928a1">let</span><span> vaultCopy = myVault </span><span style="color:#696969">// Invalid: Cannot make copies of resources</span><span> </span> </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M19.3618 20.5918C20.6238 20.5918 21.6478 19.5688 21.6478 18.3058V13.7348L22.7908 12.5918L21.6478 11.4488V6.8778C21.6478 5.6148 20.6248 4.5918 19.3618 4.5918M6.22002 4.5918C4.95702 4.5918 3.93402 5.6148 3.93402 6.8778V11.4488L2.79102 12.5918L3.93402 13.7348V18.3058C3.93402 19.5688 4.95702 20.5918 6.22002 20.5918M8.29102 12.5918L10.7253 15.0261C10.9233 15.2241 11.0223 15.3231 11.1365 15.3602C11.2369 15.3928 11.3451 15.3928 11.4455 15.3602C11.5597 15.3231 11.6587 15.2241 11.8567 15.0261L17.291 9.5918" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Strong Static Typing</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li>Prevents runtime errors by enforcing type correctness at compile time.</li><li><strong>Type inference</strong> reduces the need for explicit type annotations while maintaining safety.</li></ul><p><a href="https://cadence-lang.org/docs/language/type-safety" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span> </span><span></span><span style="color:#7928a1">let</span><span> name: </span><span style="color:#aa5d00">String</span><span> = </span><span style="color:#008000">"Cadence"</span><span> </span><span></span><span style="color:#696969">// Invalid: cannot assign an `Int` value to a `String` variable.</span><span> </span><span></span><span style="color:#696969">//</span><span> </span><span>name = </span><span style="color:#aa5d00">0</span><span> </span> <span></span><span style="color:#696969">// Language infers the type to be `Int` without a specification</span><span> </span><span></span><span style="color:#7928a1">let</span><span> age = </span><span style="color:#aa5d00">32</span><span> </span> </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M17.791 9.44672C17.791 8.93489 17.5957 8.42307 17.2052 8.03256C16.8147 7.64204 16.3029 7.44678 15.791 7.44678M15.791 15.4468C19.1047 15.4468 21.791 12.7605 21.791 9.44678C21.791 6.13307 19.1047 3.44678 15.791 3.44678C12.4773 3.44678 9.79102 6.13307 9.79102 9.44678C9.79102 9.72046 9.80934 9.98985 9.84483 10.2538C9.90319 10.688 9.93238 10.905 9.91273 11.0424C9.89227 11.1854 9.86622 11.2625 9.7957 11.3887C9.72801 11.5098 9.60873 11.6291 9.37015 11.8676L4.25964 16.9781C4.08669 17.1511 4.00022 17.2376 3.93838 17.3385C3.88355 17.428 3.84314 17.5255 3.81865 17.6275C3.79102 17.7426 3.79102 17.8649 3.79102 18.1095V19.8468C3.79102 20.4068 3.79102 20.6869 3.90001 20.9008C3.99588 21.0889 4.14886 21.2419 4.33703 21.3378C4.55094 21.4468 4.83096 21.4468 5.39102 21.4468H7.79102V19.4468H9.79102V17.4468H11.791L13.3701 15.8676C13.6087 15.6291 13.728 15.5098 13.8491 15.4421C13.9753 15.3716 14.0524 15.3455 14.1954 15.3251C14.3328 15.3054 14.5498 15.3346 14.984 15.393C15.2479 15.4285 15.5173 15.4468 15.791 15.4468Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Capability-Based Security</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li><strong>Granular access control</strong> that eliminates unauthorized and malicious asset access through entitlements and capabilities.</li><li><em class="cadence-new__code-span">storage</em> and <em class="cadence-new__code-span">public</em> paths allow control over the visibility of owned objects</li></ul><p><a href="https://cadence-lang.org/docs/language/capabilities" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Object users store in their account, represents currency</span><span> </span>resource Vault { <span> access(all) </span><span style="color:#7928a1">var</span><span> balance: UFix64 </span> <span> </span><span style="color:#696969">// Only those with a `Withdraw` reference to this object</span><span> </span><span> </span><span style="color:#696969">// can call this function. Only the owner can grant a Withdraw reference</span><span> </span> access(Withdraw) fun withdraw(amount: UFix64) } <span></span><span style="color:#696969">// Create a private withdraw capability in storage that</span><span> </span><span></span><span style="color:#696969">// can only be given to those you trust</span><span> </span>withdrawCapability = account.capabilities.issue<auth(Withdraw) &Vault>( <span> target: </span><span style="color:#d91e18">/storage/my</span><span>Vault </span>) <span></span><span style="color:#696969">// Create a public capability that allows anyone to deposit currency</span><span> </span><span></span><span style="color:#696969">// to your account because it is created in a `public` path</span><span> </span>signer.capabilities.publish ( signer.capabilities.storage.issue<&Vault>( vaultData.storagePath ), <span> </span><span class="hljs-attr">at</span><span>: </span><span style="color:#d91e18">/public/</span><span>vaultReceiver </span>) </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M7.79102 10.0577L2.79102 12.5577L12.4332 17.3788C12.5644 17.4444 12.63 17.4772 12.6988 17.4901C12.7598 17.5015 12.8223 17.5015 12.8832 17.4901C12.952 17.4772 13.0176 17.4444 13.1488 17.3788L22.791 12.5577L17.791 10.0577M7.79102 15.0577L2.79102 17.5577L12.4332 22.3788C12.5644 22.4444 12.63 22.4772 12.6988 22.4901C12.7598 22.5015 12.8223 22.5015 12.8832 22.4901C12.952 22.4772 13.0176 22.4444 13.1488 22.3788L22.791 17.5577L17.791 15.0577M2.79102 7.55768L12.4332 2.73657C12.5644 2.67098 12.63 2.63818 12.6988 2.62527C12.7598 2.61384 12.8223 2.61384 12.8832 2.62527C12.952 2.63818 13.0176 2.67098 13.1488 2.73657L22.791 7.55768L13.1488 12.3788C13.0176 12.4444 12.952 12.4772 12.8832 12.4901C12.8223 12.5015 12.7598 12.5015 12.6988 12.4901C12.63 12.4772 12.5644 12.4444 12.4332 12.3788L2.79102 7.55768Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Flexible Smart Contract Model</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li><strong>Upgradeable smart contracts</strong> with controlled modifications.</li><li>Contracts can define interfaces, enums, and composite types for better modularity.</li></ul><p><a href="https://cadence-lang.org/docs/language/contracts" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Declare an interface that requires the`greet` function</span><span> </span>access(all) contract interface Greeter { <span> access(all) fun greet(): </span><span style="color:#aa5d00">String</span><span> </span>} <span></span><span style="color:#696969">// A contract can implement interfaces to enforce correctness of implementation</span><span> </span>access(all) contract HelloWorld: Greeter { <span> access(all) fun greet(): </span><span style="color:#aa5d00">String</span><span> { </span><span> </span><span style="color:#7928a1">return</span><span> </span><span style="color:#008000">"Hello, Flow!"</span><span> </span> } } <span></span><span style="color:#696969">// Interfaces can also be used for composite types!</span><span> </span>access(all) resource interface Balance { <span> access(all) </span><span style="color:#7928a1">var</span><span> balance: UFix64 </span>} </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M9 11.4999L11 13.4999L15.5 8.99987M20 11.9999C20 16.9083 14.646 20.4783 12.698 21.6147C12.4766 21.7439 12.3659 21.8085 12.2097 21.842C12.0884 21.868 11.9116 21.868 11.7903 21.842C11.6341 21.8085 11.5234 21.7439 11.302 21.6147C9.35396 20.4783 4 16.9083 4 11.9999V7.21747C4 6.41796 4 6.0182 4.13076 5.67457C4.24627 5.37101 4.43398 5.10015 4.67766 4.8854C4.9535 4.64231 5.3278 4.50195 6.0764 4.22122L11.4382 2.21054C11.6461 2.13258 11.75 2.0936 11.857 2.07815C11.9518 2.06444 12.0482 2.06444 12.143 2.07815C12.25 2.0936 12.3539 2.13258 12.5618 2.21054L17.9236 4.22122C18.6722 4.50195 19.0465 4.64231 19.3223 4.8854C19.566 5.10015 19.7537 5.37101 19.8692 5.67457C20 6.0182 20 6.41796 20 7.21747V11.9999Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Built-in Safety Mechanisms</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li><strong>Preconditions & Postconditions</strong> to enforce correct execution.</li><li><strong>No reentrancy vulnerabilities</strong>, preventing most common exploits found in Solidity.</li></ul><p><a href="https://cadence-lang.org/docs#cadences-programming-language-pillars" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span> </span>access(all) fun withdraw(amount: UFix64): @Vault { pre { <span> amount <= self.balance: </span><span style="color:#008000">"Amount to withdraw cannot be more than the balance!"</span><span> </span> } post { <span> result.balance == before(result.balance) - amount: </span><span style="color:#008000">"Wrong amount withdrawn!"</span><span> </span> } self.balance = self.balance - amount <span> </span><span style="color:#7928a1">return</span><span> </span><span class="xml"><-create Vault(balance: amount) </span><span class="xml">} </span><span class="xml"> </span><span class="xml"></span></code></pre></div></div></div></div></div><div id="w-node-_9b9a83a2-b20a-97f7-4300-bbaab369cc32-f5ced840" class="features-tabs__media-desktop"><div class="cadence-new__features-media is--active"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Object users store in their account, represents currency</span><span> </span>resource Vault { <span> access(all) </span><span style="color:#7928a1">var</span><span> balance: UFix64 </span> <span> </span><span class="hljs-function" style="color:#007faa">init</span><span class="hljs-function">(</span><span class="hljs-function" style="color:#aa5d00">balance: UFix64</span><span class="hljs-function">)</span><span> { </span> self.balance = balance } } <span></span><span style="color:#7928a1">let</span><span> vault <- create Vault(balance: </span><span style="color:#aa5d00">10.0</span><span>) </span><span style="color:#696969">// creation</span><span> </span><span></span><span style="color:#7928a1">let</span><span> myVault <- vault </span><span style="color:#696969">// move with <-</span><span> </span><span>vault.balance </span><span style="color:#696969">// Invalid: Cannot access: The old vault was moved</span><span> </span><span></span><span style="color:#7928a1">let</span><span> vaultCopy = myVault </span><span style="color:#696969">// Invalid: Cannot make copies of resources</span><span> </span> </code></pre></div></div><div class="cadence-new__features-media"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span> </span><span></span><span style="color:#7928a1">let</span><span> name: </span><span style="color:#aa5d00">String</span><span> = </span><span style="color:#008000">"Cadence"</span><span> </span><span></span><span style="color:#696969">// Invalid: cannot assign an `Int` value to a `String` variable.</span><span> </span><span></span><span style="color:#696969">//</span><span> </span><span>name = </span><span style="color:#aa5d00">0</span><span> </span> <span></span><span style="color:#696969">// Language infers the type to be `Int` without a specification</span><span> </span><span></span><span style="color:#7928a1">let</span><span> age = </span><span style="color:#aa5d00">32</span><span> </span> </code></pre></div></div><div class="cadence-new__features-media"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Object users store in their account, represents currency</span><span> </span>resource Vault { <span> access(all) </span><span style="color:#7928a1">var</span><span> balance: UFix64 </span> <span> </span><span style="color:#696969">// Only those with a `Withdraw` reference to this object</span><span> </span><span> </span><span style="color:#696969">// can call this function. Only the owner can grant a Withdraw reference</span><span> </span> access(Withdraw) fun withdraw(amount: UFix64) } <span></span><span style="color:#696969">// Create a private withdraw capability in storage that</span><span> </span><span></span><span style="color:#696969">// can only be given to those you trust</span><span> </span>withdrawCapability = account.capabilities.issue<auth(Withdraw) &Vault>( <span> target: </span><span style="color:#d91e18">/storage/my</span><span>Vault </span>) <span></span><span style="color:#696969">// Create a public capability that allows anyone to deposit currency</span><span> </span><span></span><span style="color:#696969">// to your account because it is created in a `public` path</span><span> </span>signer.capabilities.publish ( signer.capabilities.storage.issue<&Vault>( vaultData.storagePath ), <span> </span><span class="hljs-attr">at</span><span>: </span><span style="color:#d91e18">/public/</span><span>vaultReceiver </span>) </code></pre></div></div><div class="cadence-new__features-media"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Declare an interface that requires the`greet` function</span><span> </span>access(all) contract interface Greeter { <span> access(all) fun greet(): </span><span style="color:#aa5d00">String</span><span> </span>} <span></span><span style="color:#696969">// A contract can implement interfaces to enforce correctness of implementation</span><span> </span>access(all) contract HelloWorld: Greeter { <span> access(all) fun greet(): </span><span style="color:#aa5d00">String</span><span> { </span><span> </span><span style="color:#7928a1">return</span><span> </span><span style="color:#008000">"Hello, Flow!"</span><span> </span> } } <span></span><span style="color:#696969">// Interfaces can also be used for composite types!</span><span> </span>access(all) resource interface Balance { <span> access(all) </span><span style="color:#7928a1">var</span><span> balance: UFix64 </span>} </code></pre></div></div><div class="cadence-new__features-media"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span> </span>access(all) fun withdraw(amount: UFix64): @Vault { pre { <span> amount <= self.balance: </span><span style="color:#008000">"Amount to withdraw cannot be more than the balance!"</span><span> </span> } post { <span> result.balance == before(result.balance) - amount: </span><span style="color:#008000">"Wrong amount withdrawn!"</span><span> </span> } self.balance = self.balance - amount <span> </span><span style="color:#7928a1">return</span><span> </span><span class="xml"><-create Vault(balance: amount) </span><span class="xml">} </span><span class="xml"> </span><span class="xml"></span></code></pre></div></div></div></div></div><div class="spacer-huge"></div><div><div class="text-align-center"><div><div class="flex-vertical-center"><div class="max-width-medium"><h3 class="heading-medium"><strong>Advanced Features</strong></h3></div></div></div></div><div class="spacer-large"></div><div class="features-tabs__component is--tabs-purple"><div id="w-node-_067d00a5-3a9c-2db1-e06b-55bfc30a6b96-f5ced840" class="features-tabs__media-desktop"><div class="cadence-new__features-media is--purple is--active"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span> </span><span>access(all) view fun sayHello(name: </span><span style="color:#aa5d00">String</span><span>): </span><span style="color:#aa5d00">String</span><span> { </span><span> </span><span style="color:#7928a1">return</span><span> </span><span style="color:#008000">"Hello, \(name)"</span><span> </span>} </code></pre></div></div><div class="cadence-new__features-media is--purple"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span>access(all) event SignatureVerified(publicKey: </span><span style="color:#aa5d00">String</span><span>, </span><span class="hljs-attr">signature</span><span>: </span><span style="color:#aa5d00">String</span><span>) </span> <span></span><span style="color:#7928a1">let</span><span> pk = PublicKey( </span><span> publicKey: </span><span style="color:#008000">"96142CE0C5ECD869DC88C8960E286AF1CE1B29F329BA4964213934731E65A1DE480FD43EF123B9633F0A90434C6ACE0A98BB9A999231DB3F477F9D3623A6A4ED"</span><span>.decodeHex(), </span><span> </span><span class="hljs-attr">signatureAlgorithm</span><span>: SignatureAlgorithm.ECDSA_P256 </span>) <span></span><span style="color:#7928a1">let</span><span> signature = </span><span style="color:#008000">"108EF718F153CFDC516D8040ABF2C8CC7AECF37C6F6EF357C31DFE1F7AC79C9D0145D1A2F08A48F1A2489A84C725D6A7AB3E842D9DC5F8FE8E659FFF5982310D"</span><span>.decodeHex() </span><span></span><span style="color:#7928a1">let</span><span> message : [UInt8] = [</span><span style="color:#aa5d00">1</span><span>, </span><span style="color:#aa5d00">2</span><span>, </span><span style="color:#aa5d00">3</span><span>] </span> <span></span><span style="color:#7928a1">let</span><span> isValid = pk.verify( </span> signature: signature, <span> </span><span class="hljs-attr">signedData</span><span>: message, </span><span> </span><span class="hljs-attr">domainSeparationTag</span><span>: </span><span style="color:#008000">""</span><span>, </span><span> </span><span class="hljs-attr">hashAlgorithm</span><span>: HashAlgorithm.SHA2_256 </span>) <span></span><span style="color:#7928a1">if</span><span> isValid { emit SignatureVerified(publicKey: publicKey, </span><span class="hljs-attr">signature</span><span>: signature) </span> </code></pre></div></div><div class="cadence-new__features-media is--purple"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span>transaction { </span> <span> </span><span style="color:#696969">// Authorize with multiple accounts</span><span> </span><span> </span><span style="color:#696969">// Only one needs to be the payer</span><span> </span><span> </span><span class="hljs-function" style="color:#007faa">prepare</span><span class="hljs-function">(</span><span class="hljs-function" style="color:#aa5d00">acct1: &Account, acct2: &Account</span><span class="hljs-function">)</span><span> { </span><span> log(</span><span style="color:#008000">"Acquire things from both authorizing accounts' storage"</span><span>) </span> } execute { <span> </span><span style="color:#696969">// Call multiple contracts in a single transaction</span><span> </span> FooContract.foo() BarContract.bar() } post { <span> FooContract.callCount == before(FooContract.callCount + </span><span style="color:#aa5d00">1</span><span>): </span><span> </span><span style="color:#008000">"Post-assertions must pass or the whole transaction reverts"</span><span> </span> } } </code></pre></div></div><div class="cadence-new__features-media is--purple"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Standard way for a project to represent its basic metadata</span><span> </span>access(all) struct Display { <span> access(all) </span><span style="color:#7928a1">let</span><span> name: </span><span style="color:#aa5d00">String</span><span> </span><span> access(all) </span><span style="color:#7928a1">let</span><span> description: Address </span><span> access(all) </span><span style="color:#7928a1">let</span><span> thumbnail: {File} </span>} <span></span><span style="color:#696969">// Standard way for a resource object</span><span> </span><span></span><span style="color:#696969">// to return arbitrary metadata views that it supports</span><span> </span>access(all) resource interface Resolver { <span> </span><span style="color:#696969">// Caller specifies which type of metadata it is looking for</span><span> </span><span> </span><span style="color:#696969">// and the function returns the relevant representation</span><span> </span> access(all) fun resolveView(_ view: Type): AnyStruct? } </code></pre></div></div><div class="cadence-new__features-media is--purple"><div class="code-snippet__window is--cadence-new"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span>access(all) attachment Skin </span><span style="color:#7928a1">for</span><span> GamePiece.NFT { </span><span> access(all) </span><span style="color:#7928a1">let</span><span> skinType: </span><span style="color:#aa5d00">String</span><span> </span> <span> </span><span class="hljs-function" style="color:#007faa">init</span><span class="hljs-function">(</span><span class="hljs-function" style="color:#aa5d00">_ skinType: </span><span class="hljs-function" style="color:#aa5d00">String</span><span class="hljs-function">)</span><span> { </span> self.skinType = skinType } } access(all) fun addAttachmentTo( nft: @GamePiece.NFT, <span> </span><span class="hljs-attr">skinType</span><span>: </span><span style="color:#aa5d00">String</span><span> </span>): @GamePiece.NFT { <span> </span><span style="color:#7928a1">if</span><span> nft[Skin] != nil { </span><span> </span><span style="color:#696969">// Skin attachment already attached - return</span><span> </span><span> </span><span style="color:#7928a1">return</span><span> <- nft </span> } // Attach the Skin & return return <- attach Skin(skinType) to <- nft } </code></pre></div></div></div><div id="w-node-_067d00a5-3a9c-2db1-e06b-55bfc30a6b10-f5ced840" class="features-tabs__navigation"><div class="features-tabs__tab-item is--active"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M15.291 15.7217L18.291 12.7217L15.291 9.72168M10.291 9.72168L7.29102 12.7217L10.291 15.7217M8.59102 21.7217H16.991C18.6712 21.7217 19.5113 21.7217 20.153 21.3947C20.7175 21.1071 21.1764 20.6481 21.464 20.0837C21.791 19.4419 21.791 18.6018 21.791 16.9217V8.52168C21.791 6.84152 21.791 6.00144 21.464 5.35971C21.1764 4.79522 20.7175 4.33628 20.153 4.04866C19.5113 3.72168 18.6712 3.72168 16.991 3.72168H8.59102C6.91086 3.72168 6.07078 3.72168 5.42904 4.04866C4.86456 4.33628 4.40562 4.79522 4.118 5.35971C3.79102 6.00144 3.79102 6.84152 3.79102 8.52168V16.9217C3.79102 18.6018 3.79102 19.4419 4.118 20.0837C4.40562 20.6481 4.86456 21.1071 5.42904 21.3947C6.07078 21.7217 6.91086 21.7217 8.59102 21.7217Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">User-Friendly Syntax</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li>Inspired by Swift and Rust, making it <strong>intuitive and easy to read</strong>.</li><li>Reduces developer friction with <strong>clear, explicit code structures</strong>.</li></ul><p><a href="https://cadence-lang.org/docs/language#syntax-and-behavior" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile is--purple"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span> </span><span>access(all) view fun sayHello(name: </span><span style="color:#aa5d00">String</span><span>): </span><span style="color:#aa5d00">String</span><span> { </span><span> </span><span style="color:#7928a1">return</span><span> </span><span style="color:#008000">"Hello, \(name)"</span><span> </span>} </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.4996V11.9996M12 11.9996L20.5 7.27731M12 11.9996L3.5 7.27731M12 11.9996V21.4996M20.5 16.7218L12.777 12.4313C12.4934 12.2737 12.3516 12.1949 12.2015 12.1641C12.0685 12.1367 11.9315 12.1367 11.7986 12.1641C11.6484 12.1949 11.5066 12.2737 11.223 12.4313L3.5 16.7218M21 16.0582V7.94104C21 7.5984 21 7.42708 20.9495 7.27428C20.9049 7.1391 20.8318 7.01502 20.7354 6.91033C20.6263 6.79199 20.4766 6.70879 20.177 6.54239L12.777 2.43128C12.4934 2.27372 12.3516 2.19494 12.2015 2.16406C12.0685 2.13672 11.9315 2.13672 11.7986 2.16406C11.6484 2.19494 11.5066 2.27372 11.223 2.43128L3.82297 6.54239C3.52345 6.70879 3.37369 6.792 3.26463 6.91033C3.16816 7.01502 3.09515 7.1391 3.05048 7.27428C3 7.42708 3 7.5984 3 7.94104V16.0582C3 16.4008 3 16.5721 3.05048 16.7249C3.09515 16.8601 3.16816 16.9842 3.26463 17.0889C3.37369 17.2072 3.52345 17.2904 3.82297 17.4568L11.223 21.5679C11.5066 21.7255 11.6484 21.8042 11.7986 21.8351C11.9315 21.8625 12.0685 21.8625 12.2015 21.8351C12.3516 21.8042 12.4934 21.7255 12.777 21.5679L20.177 17.4568C20.4766 17.2904 20.6263 17.2072 20.7354 17.0889C20.8318 16.9842 20.9049 16.8601 20.9495 16.7249C21 16.5721 21 16.4008 21 16.0582Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Blockchain Native Features</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li><strong>Efficient storage management</strong> using structured account storage.</li><li><strong>Native event support </strong>for on-chain event tracking.</li><li><strong>Integrated cryptography</strong> for digital signatures and hashing.</li></ul><p><a href="https://cadence-lang.org/docs/language/built-in-functions" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile is--purple"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span>access(all) event SignatureVerified(publicKey: </span><span style="color:#aa5d00">String</span><span>, </span><span class="hljs-attr">signature</span><span>: </span><span style="color:#aa5d00">String</span><span>) </span> <span></span><span style="color:#7928a1">let</span><span> pk = PublicKey( </span><span> publicKey: </span><span style="color:#008000">"96142CE0C5ECD869DC88C8960E286AF1CE1B29F329BA4964213934731E65A1DE480FD43EF123B9633F0A90434C6ACE0A98BB9A999231DB3F477F9D3623A6A4ED"</span><span>.decodeHex(), </span><span> </span><span class="hljs-attr">signatureAlgorithm</span><span>: SignatureAlgorithm.ECDSA_P256 </span>) <span></span><span style="color:#7928a1">let</span><span> signature = </span><span style="color:#008000">"108EF718F153CFDC516D8040ABF2C8CC7AECF37C6F6EF357C31DFE1F7AC79C9D0145D1A2F08A48F1A2489A84C725D6A7AB3E842D9DC5F8FE8E659FFF5982310D"</span><span>.decodeHex() </span><span></span><span style="color:#7928a1">let</span><span> message : [UInt8] = [</span><span style="color:#aa5d00">1</span><span>, </span><span style="color:#aa5d00">2</span><span>, </span><span style="color:#aa5d00">3</span><span>] </span> <span></span><span style="color:#7928a1">let</span><span> isValid = pk.verify( </span> signature: signature, <span> </span><span class="hljs-attr">signedData</span><span>: message, </span><span> </span><span class="hljs-attr">domainSeparationTag</span><span>: </span><span style="color:#008000">""</span><span>, </span><span> </span><span class="hljs-attr">hashAlgorithm</span><span>: HashAlgorithm.SHA2_256 </span>) <span></span><span style="color:#7928a1">if</span><span> isValid { emit SignatureVerified(publicKey: publicKey, </span><span class="hljs-attr">signature</span><span>: signature) </span> </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M13.0008 2L4.09429 12.6879C3.74549 13.1064 3.57108 13.3157 3.56842 13.4925C3.5661 13.6461 3.63457 13.7923 3.7541 13.8889C3.89159 14 4.16402 14 4.70887 14H12.0008L11.0008 22L19.9074 11.3121C20.2562 10.8936 20.4306 10.6843 20.4333 10.5075C20.4356 10.3539 20.3671 10.2077 20.2476 10.1111C20.1101 10 19.8377 10 19.2928 10H12.0008L13.0008 2Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Gas-less Experiences & New Business Models</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li>Separate transaction logic to enable <strong>gas-less experiences</strong> sponsored by applications.</li><li><strong>Protocol-level multicall</strong> to combine multiple transactions into one with a single approval.</li><li>Supports <strong>atomic swaps, multisig, and multiauth transactions.</strong></li><li>Enables new business models like <strong>freemium experiences, subscriptions, and removing third-party dependencies</strong>.</li></ul><p><a href="https://cadence-lang.org/docs/language/transactions" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile is--purple"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span>transaction { </span> <span> </span><span style="color:#696969">// Authorize with multiple accounts</span><span> </span><span> </span><span style="color:#696969">// Only one needs to be the payer</span><span> </span><span> </span><span class="hljs-function" style="color:#007faa">prepare</span><span class="hljs-function">(</span><span class="hljs-function" style="color:#aa5d00">acct1: &Account, acct2: &Account</span><span class="hljs-function">)</span><span> { </span><span> log(</span><span style="color:#008000">"Acquire things from both authorizing accounts' storage"</span><span>) </span> } execute { <span> </span><span style="color:#696969">// Call multiple contracts in a single transaction</span><span> </span> FooContract.foo() BarContract.bar() } post { <span> FooContract.callCount == before(FooContract.callCount + </span><span style="color:#aa5d00">1</span><span>): </span><span> </span><span style="color:#008000">"Post-assertions must pass or the whole transaction reverts"</span><span> </span> } } </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M21.2 22C21.48 22 21.62 22 21.727 21.9455C21.8211 21.8976 21.8976 21.8211 21.9455 21.727C22 21.62 22 21.48 22 21.2V10.8C22 10.52 22 10.38 21.9455 10.273C21.8976 10.1789 21.8211 10.1024 21.727 10.0545C21.62 10 21.48 10 21.2 10L18.8 10C18.52 10 18.38 10 18.273 10.0545C18.1789 10.1024 18.1024 10.1789 18.0545 10.273C18 10.38 18 10.52 18 10.8V13.2C18 13.48 18 13.62 17.9455 13.727C17.8976 13.8211 17.8211 13.8976 17.727 13.9455C17.62 14 17.48 14 17.2 14H14.8C14.52 14 14.38 14 14.273 14.0545C14.1789 14.1024 14.1024 14.1789 14.0545 14.273C14 14.38 14 14.52 14 14.8V17.2C14 17.48 14 17.62 13.9455 17.727C13.8976 17.8211 13.8211 17.8976 13.727 17.9455C13.62 18 13.48 18 13.2 18H10.8C10.52 18 10.38 18 10.273 18.0545C10.1789 18.1024 10.1024 18.1789 10.0545 18.273C10 18.38 10 18.52 10 18.8V21.2C10 21.48 10 21.62 10.0545 21.727C10.1024 21.8211 10.1789 21.8976 10.273 21.9455C10.38 22 10.52 22 10.8 22L21.2 22Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> <path d="M10 6.8C10 6.51997 10 6.37996 10.0545 6.273C10.1024 6.17892 10.1789 6.10243 10.273 6.0545C10.38 6 10.52 6 10.8 6H13.2C13.48 6 13.62 6 13.727 6.0545C13.8211 6.10243 13.8976 6.17892 13.9455 6.273C14 6.37996 14 6.51997 14 6.8V9.2C14 9.48003 14 9.62004 13.9455 9.727C13.8976 9.82108 13.8211 9.89757 13.727 9.9455C13.62 10 13.48 10 13.2 10H10.8C10.52 10 10.38 10 10.273 9.9455C10.1789 9.89757 10.1024 9.82108 10.0545 9.727C10 9.62004 10 9.48003 10 9.2V6.8Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> <path d="M3 12.8C3 12.52 3 12.38 3.0545 12.273C3.10243 12.1789 3.17892 12.1024 3.273 12.0545C3.37996 12 3.51997 12 3.8 12H6.2C6.48003 12 6.62004 12 6.727 12.0545C6.82108 12.1024 6.89757 12.1789 6.9455 12.273C7 12.38 7 12.52 7 12.8V15.2C7 15.48 7 15.62 6.9455 15.727C6.89757 15.8211 6.82108 15.8976 6.727 15.9455C6.62004 16 6.48003 16 6.2 16H3.8C3.51997 16 3.37996 16 3.273 15.9455C3.17892 15.8976 3.10243 15.8211 3.0545 15.727C3 15.62 3 15.48 3 15.2V12.8Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> <path d="M2 2.8C2 2.51997 2 2.37996 2.0545 2.273C2.10243 2.17892 2.17892 2.10243 2.273 2.0545C2.37996 2 2.51997 2 2.8 2H5.2C5.48003 2 5.62004 2 5.727 2.0545C5.82108 2.10243 5.89757 2.17892 5.9455 2.273C6 2.37996 6 2.51997 6 2.8V5.2C6 5.48003 6 5.62004 5.9455 5.727C5.89757 5.82108 5.82108 5.89757 5.727 5.9455C5.62004 6 5.48003 6 5.2 6H2.8C2.51997 6 2.37996 6 2.273 5.9455C2.17892 5.89757 2.10243 5.82108 2.0545 5.727C2 5.62004 2 5.48003 2 5.2V2.8Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Future-proof Interoperable Assets</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li><strong>Custom metadata</strong> at the asset level ensures <strong>future interoperability</strong> with evolving standards.</li><li><strong>Guaranteed backward compatibility</strong> for existing assets and smart contracts.</li><li><strong>Metadata unlocks new features</strong> such as readable royalties by any exchange or adding creator social media links in NFTs for application frontends.</li></ul><p><a href="https://cadence-lang.org/docs/language/contract-updatability#structs-resources-and-interfaces" target="_blank">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile is--purple"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span style="color:#696969">// Standard way for a project to represent its basic metadata</span><span> </span>access(all) struct Display { <span> access(all) </span><span style="color:#7928a1">let</span><span> name: </span><span style="color:#aa5d00">String</span><span> </span><span> access(all) </span><span style="color:#7928a1">let</span><span> description: Address </span><span> access(all) </span><span style="color:#7928a1">let</span><span> thumbnail: {File} </span>} <span></span><span style="color:#696969">// Standard way for a resource object</span><span> </span><span></span><span style="color:#696969">// to return arbitrary metadata views that it supports</span><span> </span>access(all) resource interface Resolver { <span> </span><span style="color:#696969">// Caller specifies which type of metadata it is looking for</span><span> </span><span> </span><span style="color:#696969">// and the function returns the relevant representation</span><span> </span> access(all) fun resolveView(_ view: Type): AnyStruct? } </code></pre></div></div></div></div><div class="features-tabs__tab-item"><div class="features-tabs__tab-button"><div class="features-tabs__tab-icon w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M7.5 4.5C7.5 3.11929 8.61929 2 10 2C11.3807 2 12.5 3.11929 12.5 4.5V6H13.5C14.8978 6 15.5967 6 16.1481 6.22836C16.8831 6.53284 17.4672 7.11687 17.7716 7.85195C18 8.40326 18 9.10218 18 10.5H19.5C20.8807 10.5 22 11.6193 22 13C22 14.3807 20.8807 15.5 19.5 15.5H18V17.2C18 18.8802 18 19.7202 17.673 20.362C17.3854 20.9265 16.9265 21.3854 16.362 21.673C15.7202 22 14.8802 22 13.2 22H12.5V20.25C12.5 19.0074 11.4926 18 10.25 18C9.00736 18 8 19.0074 8 20.25V22H6.8C5.11984 22 4.27976 22 3.63803 21.673C3.07354 21.3854 2.6146 20.9265 2.32698 20.362C2 19.7202 2 18.8802 2 17.2V15.5H3.5C4.88071 15.5 6 14.3807 6 13C6 11.6193 4.88071 10.5 3.5 10.5H2C2 9.10218 2 8.40326 2.22836 7.85195C2.53284 7.11687 3.11687 6.53284 3.85195 6.22836C4.40326 6 5.10218 6 6.5 6H7.5V4.5Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/> </svg></div><div class="features-tabs__tab-name"><div class="features-tabs__tab-name-text">Modable Contracts</div></div></div><div class="features-tabs__tab-content"><div class="spacer-small"></div><div class="text-rich-text w-richtext"><ul role="list"><li><strong>Attachments</strong> in Cadence 1.0 allow developers to add additional data and functionality to existing contracts and types <strong>without requiring permission from the original contract author</strong>.</li><li>Empowers <strong>communities to evolve and extend products permissionlessly</strong>, enabling new applications such as:<strong>‍</strong><ul role="list" class="sublist"><li>Fact-checking in SocialFi.</li><li>Extendable games.</li><li>NFTs enhanced with accessories or DeFi yield bonuses.</li></ul></li></ul><p><a href="https://cadence-lang.org/docs/language/attachments">Learn more</a></p></div></div><div class="features-tabs__media-mobile"><div class="cadence-new__features-media is--mobile is--purple"><div class="code-snippet__window is--cadence-new is--mobile"><div class="code-snippet__window-top-bar"><div class="code-snippet__window-actions"><div class="code-snippet__window-dot"></div><div class="code-snippet__window-dot is--2"></div><div class="code-snippet__window-dot is--3"></div></div></div><pre contenteditable="false" class="code-snippet__code w-code-block" style="display:block;overflow-x:auto;background:#fefefe;color:#545454;padding:0.5em"><code class="language-javascript" style="white-space:pre"><span>access(all) attachment Skin </span><span style="color:#7928a1">for</span><span> GamePiece.NFT { </span><span> access(all) </span><span style="color:#7928a1">let</span><span> skinType: </span><span style="color:#aa5d00">String</span><span> </span> <span> </span><span class="hljs-function" style="color:#007faa">init</span><span class="hljs-function">(</span><span class="hljs-function" style="color:#aa5d00">_ skinType: </span><span class="hljs-function" style="color:#aa5d00">String</span><span class="hljs-function">)</span><span> { </span> self.skinType = skinType } } access(all) fun addAttachmentTo( nft: @GamePiece.NFT, <span> </span><span class="hljs-attr">skinType</span><span>: </span><span style="color:#aa5d00">String</span><span> </span>): @GamePiece.NFT { <span> </span><span style="color:#7928a1">if</span><span> nft[Skin] != nil { </span><span> </span><span style="color:#696969">// Skin attachment already attached - return</span><span> </span><span> </span><span style="color:#7928a1">return</span><span> <- nft </span> } // Attach the Skin & return return <- attach Skin(skinType) to <- nft } </code></pre></div></div></div></div></div></div><div class="hide w-embed"><style> .features-tabs__tab-item {opacity:0.5;} .features-tabs__tab-item.is--active {opacity:1;} .features-tabs__tab-item .features-tabs__tab-content{opacity:0; height:0;} .features-tabs__tab-item.is--active .features-tabs__tab-content{opacity:1; height:auto;} .features-tabs__media-mobile {display:none;} @media (max-width: 767px) { .features-tabs__tab-item.is--active .features-tabs__media-mobile { display: block; } } .features-tabs__tab-item.is--active .features-tabs__tab-icon{color:var(--green--700)} .is--tabs-purple .features-tabs__tab-item.is--active {border-color:#E190FF;} .is--tabs-purple .features-tabs__tab-item.is--active .features-tabs__tab-icon{color:#B75FD8;} .features-tabs__media-desktop .cadence-new__features-media {display:none;} .features-tabs__media-desktop .cadence-new__features-media.is--active {display:flex;} @keyframes fadeInOnce { from { opacity: 0; } to { opacity: 1; } } 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is--bg-gradient-purple"><div class="padding-global"><div class="padding-section-large"><div class="container-xlarge"><div class="cadence-new__cta"><div class="text-align-center"><div class="flex-vertical-center"><h2 class="heading-large"><strong>Start Building with Cadence</strong></h2><div class="spacer-xsmall"></div><div class="max-width-small"><div>Explore tutorials, docs, and the Cadence playground.</div></div></div></div><div class="spacer-large"></div><div class="cadence-new__grid-benefits"><a href="https://cadence-lang.org/docs/tutorial/first-steps" target="_blank" class="cadence-new__cta-card w-inline-block"><div class="cadence-new__benefits-icon-wrap"><div class="cadence-new__benefits-icon-embeed w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M12 20H5.2C4.07989 20 3.51984 20 3.09202 19.782C2.71569 19.5903 2.40973 19.2843 2.21799 18.908C2 18.4802 2 17.9201 2 16.8V7.2C2 6.07989 2 5.51984 2.21799 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