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<h1 class="entry-title">The World Map of C++ STL Algorithms</h1> <p>We all know that we should know our STL algorithms, because they help make our code more expressive and more robust (sometimes in spectacular ways!).</p> <p>But do you know <em>all</em> your STL algorithms?</p> <p>There are 105 of them if we include those of C++17, and every one of them has a chance to be useful in your code.</p> <p>One way to remember those useful functions is by grouping them into <strong>7聽families of algorithms</strong>:</p> <ul> <li>the queriers,</li> <li>the permutationers,</li> <li>the algos on sets,</li> <li>the movers,</li> <li>the value modifiers,</li> <li>the structure changers,</li> <li>and the algos of raw memory.</li> </ul> <p>And each of those families have sub-families: the searchers, the property queriers, the partitioners, etc.</p> <p>To provide a visual representation of the families and an easy access for reference (and also have a cool geek accessory!), here is the <strong>World Map Of The STL Algorithms</strong>:</p> <p><img fetchpriority="high" decoding="async" class="size-full wp-image-3352 aligncenter" src="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=800%2C566&ssl=1" alt="world map C++ STL algorithms" width="800" height="566" srcset="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?w=800&ssl=1 800w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=150%2C106&ssl=1 150w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=300%2C212&ssl=1 300w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=768%2C543&ssl=1 768w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=32%2C23&ssl=1 32w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=141%2C100&ssl=1 141w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=201%2C142&ssl=1 201w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=350%2C248&ssl=1 350w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=565%2C400&ssl=1 565w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=622%2C440&ssl=1 622w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_map_800.jpg?resize=763%2C540&ssl=1 763w" sizes="(max-width: 800px) 100vw, 800px" data-recalc-dims="1"/></p> <p>The map is available in electronic wallpaper version. You can <a href="http://eepurl.com/dnAn_1">download it</a>聽by subscribing to the Fluent C++ mailing list (no spam, you can unsubscribe any time).</p> <p>Each family of algorithms owns a piece of land and a shield:</p> <p><img decoding="async" class="wp-image-3354 aligncenter" src="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=400%2C424&ssl=1" alt="remve unique C++ STL algorithms" width="400" height="424" srcset="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?w=772&ssl=1 772w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=142%2C150&ssl=1 142w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=283%2C300&ssl=1 283w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=768%2C814&ssl=1 768w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=30%2C32&ssl=1 30w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=94%2C100&ssl=1 94w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=190%2C201&ssl=1 190w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=378%2C400&ssl=1 378w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=415%2C440&ssl=1 415w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/structure_changers.jpg?resize=510%2C540&ssl=1 510w" sizes="(max-width: 400px) 100vw, 400px" data-recalc-dims="1"/></p> <p>And sub-families are represented in regions:</p> <p><img decoding="async" class="wp-image-3355 aligncenter" src="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=450%2C351&ssl=1" alt="make_heap push_heap pop_heap C++ STL algorithms" width="450" height="351" srcset="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?w=691&ssl=1 691w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=150%2C117&ssl=1 150w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=300%2C234&ssl=1 300w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=32%2C25&ssl=1 32w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=128%2C100&ssl=1 128w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=201%2C157&ssl=1 201w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=350%2C273&ssl=1 350w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=513%2C400&ssl=1 513w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/algos_heap_region.jpg?resize=564%2C440&ssl=1 564w" sizes="(max-width: 450px) 100vw, 450px" data-recalc-dims="1"/></p> <p>And every city on the map <em>is</em> an STL algorithm! The visual layout shows what the STL has, and which algorithms are closely related to each other. This is how I memorize them.</p> <p>Interested in travelling the world of the STL to learn all the STL algorithms too? Watch my CppCon talk that presents the 105 STL algorithms, with the World Map as a support:</p> <p><iframe loading="lazy" src="https://www.youtube.com/embed/2olsGf6JIkU" width="560" height="315" frameborder="0" allowfullscreen="allowfullscreen"></iframe></p> <p>Do you find this map would also make it practical and fun for you to learn the STL algorithms?</p> <p>You can <a href="http://eepurl.com/dnAn_1">download it</a>聽by subscribing to the Fluent C++ mailing list (no spam, you can unsubscribe any time).</p> <p> </p> <p><img loading="lazy" decoding="async" class="aligncenter size-full wp-image-3359" src="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=500%2C475&ssl=1" alt="C++ STL algorithms" width="500" height="475" srcset="https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?w=500&ssl=1 500w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=150%2C143&ssl=1 150w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=300%2C285&ssl=1 300w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=32%2C30&ssl=1 32w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=105%2C100&ssl=1 105w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=201%2C191&ssl=1 201w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=316%2C300&ssl=1 316w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=421%2C400&ssl=1 421w, https://i0.wp.com/www.fluentcpp.com/wp-content/uploads/2018/03/world_of_algorithms_title.jpg?resize=463%2C440&ssl=1 463w" sizes="(max-width: 500px) 100vw, 500px" data-recalc-dims="1"/></p> <h3>You may also like:</h3> <ul> <li><a href="http://fluentcpp.com/STL">The STL Learning Resource</a></li> <li><a href="https://www.fluentcpp.com/2017/01/05/the-importance-of-knowing-stl-algorithms/">The importance of knowing your STL algorithms</a></li> </ul> <div class="clear"></div></div></article> <article id="comments"> <div class="awr"> <div class="cmb" style="margin-left: 0px;" id="thrive_container_list_comments"></div></div></article> <div id="comment-bottom"></div><div class="clear"></div></div><footer> <div class="wrp"> <div class="fms"> <ul> <li> <a href="https://twitter.com/JoBoccara" target="_blank" class="twitter"></a> </li> </ul></div><div class="fmc"> <p> Copyright text 2018 by Fluent C++.   -  Designed by <a href="https://www.thrivethemes.com" target="_blank" style="text-decoration: underline;">Thrive Themes</a> | Powered by <a style="text-decoration: underline;" href="//www.wordpress.org" target="_blank">WordPress</a> 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