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https://github.com/mudssrali/elixir-enum-cheatsheet
a simple elixir enum cheatsheet with emoji
https://github.com/mudssrali/elixir-enum-cheatsheet
cheatsheet education elixir elixir-lang enum learning-elixir
Last synced: about 1 month ago
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a simple elixir enum cheatsheet with emoji
- Host: GitHub
- URL: https://github.com/mudssrali/elixir-enum-cheatsheet
- Owner: mudssrali
- Created: 2021-04-11T17:36:19.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-01-23T11:42:53.000Z (almost 3 years ago)
- Last Synced: 2023-03-06T08:17:09.420Z (almost 2 years ago)
- Topics: cheatsheet, education, elixir, elixir-lang, enum, learning-elixir
- Homepage:
- Size: 9.77 KB
- Stars: 0
- Watchers: 1
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Elixir Enum Cheatsheet
a simple elixir enum cheatsheet
## Functions
- `all?`
```ex
[👋🏼 🤚🏼 🖐🏼 ✋🏼 🖖🏼 👌🏼] |> Enum.all?( fn x -> x == 👌🏼 end) ---> false
```
- `any?`
```ex
[👋🏼 🤚🏼 🖐🏼 ✋🏼 🖖🏼 👌🏼] |> Enum.any?( fn x -> x == 👌🏼 end) ---> true
```
- `at`
```ex
[😀 😃 😄 😁 😆 😅] |> Enum.at(5) ---> 😅
```
- `chunk_by`
```ex
[😀 😃 😁 😆 😅] |> Enum.chunk_by(fn x -> x == 😁) ---> [[😀 😃] [😁] [😆 😅]]
```
- `chunk_every`
```ex
[👏 🙌 👐 🤲 🤝] |> Enum.chunk_every(2) ---> [[👏 🙌] [👐 🤲] [🤝]]
```
- `concat`
```ex
[🐶 🐱 🐭] |> Enum.concat([🐹 🐰 🦊]) ---> [🐶 🐱 🐭 🐹 🐰 🦊]
```
- `count`
```ex
[🐶 🐱 🐭 🐹 🐰 🦊] |> Enum.count() ---> 6
```
- `dedup` - remove consecutive duplicates
```ex
[🐹 🐰 🦊 🦊 🐹 🐰] |> Enum.dedup() ---> [🐹 🐰 🦊 🐹 🐰]
```
- `drop`
```ex
[👋🏼 🤚🏼 🖐🏼 🦊 🐹 🐰] |> Enum.drop(3) ---> [🦊 🐹 🐰]
```
- `drop_every`
```ex
1..10 |> Enum.drop_every(2) ---> [2, 4, 6, 8, 10]
1..10 |> Enum.drop_every(1) ---> []
1..10 |> Enum.drop_every(0) ---> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
```
- `drop_while`
```ex
1..10 |> Enum.drop_while(fn x -> x < 5 end) ---> [6, 7, 8, 9, 10]
```
- `each`
```ex
1..2 |> Enum.each(fn x -> IO.puts(x) end) ---> 1 \n 2
```
- `empty?`
```ex
[] |> Enum.empty?() ---> true
```
- `fetch`
```ex
[👋🏼 🤚🏼 🖐🏼 🦊 🐹 🐰] |> Enum.fetch(3) ---> {:ok, 🦊}
```
- `filter`
```ex
1..10 |> Enum.filter(fn x -> rem(x, 2) == 0 end) --> [2, 4, 6, 8, 10]
```
- `find`
```ex
[🐹 🐰 🦊 🦊 🐹 🐰] |> Enum.find(fn x -> x == 🦊 end) ---> 🦊
```
- `find_index`
```ex
[🐹 🐰 🦊 🦊 🐹 🐰] |> Enum.find(fn x -> x == 🦊 end) ---> 2
```
- `flat_map`
```ex
["🐹", "🦊"] |> Enum.flat_map(fn x -> [x, x] end) ---> [["🐹", "🐹"], ["🦊", "🦊"]]
```
- `frequencies`
```ex
["🐹", "🐰", "🦊", "🦊", "🐹"] |> Enum.frequencies() ---> %{"🐰" => 1, "🐹" => 2, "🦊" => 2}
```
- `frequencies_by`
```ex
["🐹", "🐰", "🦊", "🦊", "🐹"] |> Enum.frequencies_by(fn x -> x == "🦊" end) ---> %{false: 3, true: 2}
```
- `group_by`
```ex
["🐹", "🐰", "🦊", "🦊", "🐹"] |> Enum.group_by(fn x -> x end) ---> %{"🐹" => ["🐹","🐹"], "🐰" => ["🐰"], "🦊" => ["🦊","🦊"]}
```
```ex
["🐹", "🐰", "🦊", "🦊", "🐹"] |> Enum.group_by(fn x -> x end, fn x -> name_of(x) end) ---> %{"🐹" => ["bear","bear"], "🐰" => ["rabbit"], "🦊" => ["fox","fox"]}
```
- `intersperse`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.intersperse("🐰") ---> ["🐹", "🐰", "🦊", "🐰", "🦊", "🐰", "🐹"]
["🐹"] |> Enum.intersperse("🐰") ---> ["🐹"]
[] |> Enum.intersperse("🐰") ---> []
```
- `into`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.into([]) ---> ["🐹", "🦊", "🦊", "🐹"]
%{bear: "🐹", fox: "🦊"} |> Enum.into([]) ---> [bear: "🐹", fox: "🦊"]
%{bear: "🐰", fox: "🦊", bear: "🐹"} |> Enum.into([]) ---> [bear: "🐹", fox: "🦊"]
```
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.into([], fn x -> name_of(x) end) ---> ["bear", "fox", "fox", "bear"]
```
- `join`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.join("🐰") ---> "🐹🐰🦊🐰🦊🐰🐹"
```
- `map`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.map(fn x -> "#{x}🐰" end) ---> ["🐹🐰", "🦊🐰", "🦊🐰", "🐹🐰"]
```
- `map_every`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.map_every(2, fn x -> "#{x}🐰" end) ---> ["🐹", "🦊🐰", "🦊", "🐹🐰"]
```
- `map_intersperse`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.map_intersperse("🐶", fn x -> "#{x}🐰" end) ---> ["🐹🐰", "🐶🐰", "🦊🐰", "🐶🐰", "🦊🐰", "🐶🐰", "🐹🐰"]
```
- `map_join`
```ex
["🐹", "🦊", "🦊", "🐹"] |> Enum.map_join("🐶", fn x -> "#{x}🐰" end) ---> "🐹🐰🐶🦊🐰🐶🦊🐰🐶🐹🐰"
```
- `map_reduce`
```ex
["🐹", "🦊", "🦊", "🐰"] |> Enum.map_reduce("🐶", fn x, acc -> {"#{x}🐰", "#{x}#{acc}"} end) ---> {["🐹🐰", "🦊🐰", "🦊🐰", "🐰🐰"], "🐰🦊🦊🐹🐶" }
```
- `max`
```ex
[1, 3, 6, 9] |> Enum.max() ---> 9
```
- `max_by`
```ex
["🐹", "🦊", "🦊", "🐰"] |> Enum.max_by(fn x -> name_of(x) end) ---> "🐰"
```
- `member?`
```ex
["🐹", "🦊", "🦊", "🐰"] |> Enum.member?("🐰") ---> true
["🐹", "🦊", "🦊" |> Enum.member?("🐰") ---> false
```
- `min`
```ex
[1, 3, 6, 9] |> Enum.min() ---> 1
```
- `min_by`
```ex
["🐹", "🦊", "🦊", "🐰"] |> Enum.min_by(fn x -> name_of(x) end) ---> "🐹"
```
- `min_max`
```ex
[1, 2, 3, 4, 5, 9] |> Enum.min_max() ---> {1, 9}
```
- `min_max_by`
```ex
["🐹", "🦊", "🦊", "🐰"] |> Enum.min_max_by(fn x -> name_of(x) end) ---> {"🐹", "🐰"}
```
- `random`
```ex
["🐹", "🦊", "🦊", "🐰"] |> Enum.random() ----> "🦊"
```
- `reduce`
```ex
1..10 |> Enum.reduce(0, fn (x, agg) -> agg + x end) ----> 55
```
- `reduce_while`
```ex
[] |> Enum.reduce_while()
```
- `reject`
```ex
[] |> Enum.reject()
```
- `reverse`
```ex
["🐹", "🦊", "🐰"] |> Enum.reverse() -----> ["🐰", "🦊","🐹"]
```
- `reverse_slice`
```ex
[] |> Enum.reverse_slice()
```
- `scan`
```ex
[] |> Enum.scan()
```
- `shuffle`
```ex
["🐹", "🦊", "🐰"] |> Enum.shuffle() ------> ["🐹", "🐰", "🦊"]
```
- `slice`
```ex
["🐹", "🦊", "🐰"] |> Enum.slice(1,2) -----> ["🦊", "🐰"]
```
- `sort`
```ex
[45, 36, 78, 1, 4] |> Enum.sort() -------> [1, 4, 36, 45, 78]
```
- `sort_by`
```ex
[] |> Enum.sort_by()
```
- `split`
```ex
["🐹", "🦊", "🐰"] |> Enum.split(2) -----> {["🐹", "🦊"], ["🐰"]}
```
- `split_while`
```ex
[] |> Enum.split_while()
```
- `split_with`
```ex
[] |> Enum.split_with()
```
- `sum`
```ex
[1, 2, 3, 4, 5] |> Enum.sum() -----> 15
```
- `product`
```ex
[1, 2, 3, 4, 5] |> Enum.product() -----> 120
```
- `take`
```ex
[] |> Enum.take()
```
- `take_every`
```ex
[] |> Enum.take_every()
```
- `take_random`
```ex
[] |> Enum.take_random()
```
- `take_while`
```ex
[] |> Enum.take_while()
```
- `to_list`
```ex
[] |> Enum.to_list()
```
- `uniq`
```ex
["🐹", "🦊", "🦊","🐰", "🐰"] |> Enum.uniq() -----> ["🐹", "🦊", "🐰"]
```
- `uniq_by`
```ex
[] |> Enum.uniq_by()
```
- `unzip`
```ex
[] |> Enum.unzip()
```
- `with_index`
```ex
["🐹", "🦊", "🐰"] |> Enum.with_index() -----> [{"🐹", 0}, {"🦊", 1}, {"🐰", 2}]
```
- `zip`
```ex
[] |> Enum.zip()
```