https://github.com/cjen07/param_pipe

parameterized pipe in elixir: |n>
https://github.com/cjen07/param_pipe

elixir metaprogramming pipe pipeline

Last synced: 10 days ago
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parameterized pipe in elixir: |n>

• Host: GitHub
• URL: https://github.com/cjen07/param_pipe
• Owner: cjen07
• License: mit
• Created: 2017-07-18T14:12:38.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-10-15T07:49:45.000Z (about 6 years ago)
• Last Synced: 2024-09-22T20:42:00.960Z (about 2 months ago)
• Topics: elixir, metaprogramming, pipe, pipeline
• Language: Elixir
• Size: 12.7 KB
• Stars: 15
• Watchers: 1
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ParamPipe

## Prerequisite

* Erlang v21.0

* Elixir v1.7.3

## Installation

```elixir

def deps do

  [

    {:param_pipe, "~> 0.2.0"}

  ]

end

```

## Tests

```elixir

  mix test

```

## parameterized pipe in elixir: |n>

```elixir

  use ParamPipe

  def foo(a, b, c) do

    a*2 + b*3 + c*4

  end

  def bar0() do

    100 |> div(5) |> div(2) # 10

  end

  # negative n in |n> is supported

  def bar1() do

    1 |0> foo(0, 0) |1> foo(0, 0) |-1> foo(0, 0) # 24

  end

  # mixed usage with |> is supported

  def bar2() do

    1

    |> foo(0, 0) # 2

    |1> foo(0, 0) # 6

    |> div(2) # 3

    |> div(3) # 1

    |2> foo(0, 0) # 4

    |> (fn x -> foo(0, 0, x) end).() # 16

    |-1> foo(0, 0) # 64

  end

  # assigning a variable within the pipe operator is supported

  def bar3() do

    h =

      1

      |-2> foo(0, 0) = f # 3 = f

      |-1> foo(0, 0) # 12

      |> foo(0, 0) = g # 24 = g

      |-1> foo(0, 0) # 96

      |> foo(f, g) # 297

    h

  end

```