--- title: Sure, map(), .filter(), and .reduce() Are Great and All,... description: Discussion about "Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds" on daily.dev - join... canonical: https://daily.dev/posts/sure-map-filter-and-reduce-are-great-and-all-but-don-t-use-them-in-place-of-common-sense-udyacmhlj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds | daily.dev og:description: Discussion about "Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds" on daily.dev - join... og:url: https://daily.dev/posts/sure-map-filter-and-reduce-are-great-and-all-but-don-t-use-them-in-place-of-common-sense-udyacmhlj og:image: https://api.daily.dev/og/posts/UdyACmHLj.png og:image:alt: Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds **[JSK](https://daily.dev/sources/jsk)** · 3 min read · 12 upvotes · 2 comments ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/sure-map-filter-and-reduce-are-great-and-all-but-don-t-use-them-in-place-of-common-sense-udyacmhlj) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds","url":"https://daily.dev/posts/sure-map-filter-and-reduce-are-great-and-all-but-don-t-use-them-in-place-of-common-sense-udyacmhlj","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/sure-map-filter-and-reduce-are-great-and-all-but-don-t-use-them-in-place-of-common-sense-udyacmhlj"},"datePublished":"2020-08-27T11:42:17.762Z","dateModified":"2021-10-07T14:17:10.317Z","description":"Discussion about \"Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds\" on daily.dev - join...","image":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","thumbnailUrl":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","isAccessibleForFree":true,"articleSection":"JSK","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"JSK","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/jsk","url":"https://daily.dev/sources/jsk"},"commentCount":2,"discussionUrl":"https://daily.dev/posts/sure-map-filter-and-reduce-are-great-and-all-but-don-t-use-them-in-place-of-common-sense-udyacmhlj","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":12},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":2}],"keywords":"","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"JSK","item":"https://daily.dev/sources/jsk"},{"@type":"ListItem","position":3,"name":"Sure, map(), .filter(), and .reduce() Are Great and All, But Don't Use Them In Place of Common Sense - I Like Kill Nerds"}]} ```