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feat: Add article for Elixir Keyword Lists (#36141)

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Mandar Vaze
2019-07-20 02:44:41 +05:30
committed by Quincy Larson
parent 6078081a3f
commit 9d7ad71964
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guide/english/elixir/keyword-lists/index.md
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@ -3,11 +3,22 @@ title: Keyword Lists
--- ---
## Keyword Lists ## Keyword Lists
This is a stub. <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/elixir/keyword-lists/index.md' target='_blank' rel='nofollow'>Help our community expand it</a>. Keyword Lists are used for storing the key-value pairs as tuples.
<a href='https://github.com/freecodecamp/guides/blob/master/README.md' target='_blank' rel='nofollow'>This quick style guide will help ensure your pull request gets accepted</a>. ```shell
iex(1)> iex(3)> kw_list = [{:key1, "Val1"}, {:key2, "Val2"}, {:key1, "It is OK to repeat key1"}]
[key1: "Val1", key2: "Val2", key1: "It is OK to repeat key1"]
```
curly braces can be omitted as seen in the `iex` response on the second line.
<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds --> In Keyword Lists, the Keys :
- Must be atoms
- Can be repeated
- Are ordered as specified by the developer.
Keyword lists are default mechanism for passing options to functions in Elixir.
#### More Information: #### More Information:
<!-- Please add any articles you think might be helpful to read before writing the article --> * [Elixir Documentation](https://elixir-lang.org/getting-started/keywords-and-maps.html#keyword-lists)
* [Keyword HexDocs](https://hexdocs.pm/elixir/Keyword.html)