# What is in the standard library?

**URL:** https://discourse.julialang.org/t/what-is-in-the-standard-library/16819
**Category:** New to Julia
**Created:** [October 26, 2018, 11:09am UTC](https://discourse.julialang.org/t/what-is-in-the-standard-library/16819 "2018-10-26T11:09:49Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![harven](https://avatars.discourse-cdn.com/v4/letter/h/3da27b/32.png) [@harven](https://discourse.julialang.org/u/harven)
#### Post date: [October 26, 2018, 11:09am UTC](https://discourse.julialang.org/t/what-is-in-the-standard-library/16819/1 "2018-10-26T11:09:49Z")

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There is a standard library in julia v1.0. How can I get the list of modules in that library?

I am also a bit confused by Iterators.

> julia\> join(names(Iterators), " ")  
> “Iterators countfrom cycle drop enumerate flatten partition product repeated rest take zip”

> julia\> apropos(“Iterators”)  
> … long list containing functions not in the previous list: Iterators.filter, Iterators.peel, Iterators.reverse but not Iterators.enumerate.

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### Author: ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)
#### Post date: [October 26, 2018, 11:13am UTC](https://discourse.julialang.org/t/what-is-in-the-standard-library/16819/2 "2018-10-26T11:13:23Z")

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> [@harven](#):
>
> There is a standard library in julia v1.0. How can I get the list of modules in that library?

The [documentation](https://docs.julialang.org/en/stable/), perhaps?

> [@harven](#):
>
> I am also a bit confused by Iterators.

The [module](https://docs.julialang.org/en/stable/base/iterators/), or the concept?

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<div class="post-metadata">

### Author: ![harven](https://avatars.discourse-cdn.com/v4/letter/h/3da27b/32.png) [@harven](https://discourse.julialang.org/u/harven)
#### Post date: [October 26, 2018, 3:08pm UTC](https://discourse.julialang.org/t/what-is-in-the-standard-library/16819/3 "2018-10-26T15:08:33Z")

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I wish to list the modules installed in the standard library from a program.

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### Author: ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [October 26, 2018, 3:12pm UTC](https://discourse.julialang.org/t/what-is-in-the-standard-library/16819/4 "2018-10-26T15:12:54Z")

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```julia
 readdir(Sys.STDLIB)

```