https://github.com/eproxus/mapz

Additions to the Erlang maps module
https://github.com/eproxus/mapz

Last synced: 8 months ago
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Additions to the Erlang maps module

• Host: GitHub
• URL: https://github.com/eproxus/mapz
• Owner: eproxus
• License: mit
• Created: 2014-12-17T13:27:22.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2025-02-14T18:26:13.000Z (over 1 year ago)
• Last Synced: 2025-03-18T04:42:51.870Z (about 1 year ago)
• Language: Erlang
• Size: 120 KB
• Stars: 15
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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mapz




  

    

  

  

    

  

  

    

  

  

    

  





  Function Reference






`mapz` contains additions to the Erlang maps module, mostly functionality to

nested map usage. It tries to stay as true as possible to the original `maps`

API with the same or similar errors where applicable.

## Features

### Deep Access

#### Getting & Setting

```erlang

1> Map = #{a => #{big => #{nested => #{map => with},some => values},

..         in => it,like => "hello"}}.

#{a =>

      #{big => #{nested => #{map => with},some => values},

        in => it,like => "hello"}}

2> mapz:deep_get([a, big, nested, map], Map).

with

3> mapz:deep_search([a, big, nested, list], Map).

{error,[a,big,nested],#{map => with}}

4> mapz:deep_remove([a, like], Map).

#{a =>

      #{big => #{nested => #{map => with},some => values},

        in => it}}

```

#### Merging

```erlang

5> NewMap = mapz:deep_merge(Map, #{a => #{big => #{nested => #{list => [1,2,3]}}}}).

#{a =>

      #{big =>

            #{nested => #{list => [1,2,3],map => with},some => values},

        in => it,like => "hello"}}

6> mapz:deep_search([a, big, nested, list], NewMap).

{ok,[1,2,3]}

```

#### Inverse

```erlang

1> mapz:inverse(#{a => 1, b => 2, c => 3}).

#{1 => a,2 => b,3 => c}

```