# Array basics

**URL:** <https://discourse.julialang.org/t/array-basics/55919>\
**Category:** New to Julia\
**Created:** [February 24, 2021, 8:33am UTC](https://discourse.julialang.org/t/array-basics/55919 "2021-02-24T08:33:20Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [February 24, 2021, 2:23pm UTC](https://discourse.julialang.org/t/array-basics/55919/18 "2021-02-24T14:23:19Z")

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See also this post and the surrounding discussion: [Why specify argument types and return types - #6 by stevengj](https://discourse.julialang.org/t/why-specify-argument-types-and-return-types/55567/6)

I’ve also proposed an addition to the manual, since this kind of question comes up a lot: [add basic overview of when to use type declarations by stevengj · Pull Request #39812 · JuliaLang/julia · GitHub](https://github.com/JuliaLang/julia/pull/39812)

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