danielberkompas/destructure

---

danielberkompas/destructure.json

{
  "createdAt": "2016-10-31T21:04:47Z",
  "defaultBranch": "master",
  "description": "Javascript-style destructuring for Elixir",
  "fullName": "danielberkompas/destructure",
  "homepage": null,
  "language": "Elixir",
  "name": "destructure",
  "pushedAt": "2022-08-31T20:08:49Z",
  "stargazersCount": 110,
  "topics": [
    "elixir",
    "hex"
  ],
  "updatedAt": "2024-06-18T02:33:23Z",
  "url": "https://github.com/danielberkompas/destructure"
}

Destructure

Adds Javascript-style destructuring to Elixir. When working with a map, instead of writing match operation like this:

def full_name(%{first_name: first_name, last_name: last_name}) do
  "#{first_name} #{last_name}"
end

You can write:

import Destructure

def full_name(d%{first_name, last_name}) do
  "#{first_name} #{last_name}"
end

It also works with structs and keyword.

import Destructure

def full_name(d%Person{first_name, last_name}) do
  "#{first_name} #{last_name}"
end
def full_name(d[first_name, last_name]) do
  "#{first_name} #{last_name}"
end

You can also do it in a case statement.

case post(url, data) do
  {:ok, d%{body}} -> # instead of {:ok, %{body: body}}
    # use body variable
  _other ->
    # ...
end

Unlike Javascript, you can still bind custom variables:

d(%{first, last, email: mail}) = %{...}

See the Hex Documentation for more details.

Installation

Add destructure to your list of dependencies in mix.exs:

def deps do
  [{:destructure, "~> 0.2.3"}]
end