A collection of functional operators for golang with generics

test codecov

fn

fn is a collection of go functional operators with generics

Getting Started

Prerequisites

Go 1.18

go install golang.org/dl/go1.18beta1@latest
go1.18beta1 download

Installation

go get github.com/birwin93/fn

Usage

import "github.com/birwin93/fn"

func main() {
  nums := []int{1, 2, 3}
  
  sum := fn.Sum(nums)
  
  filteredNums := fn.Filter(nums, func(i int) bool {
    return i > 1
  })
  
  doubleNums := fn.Map(nums, func(i int) int {
    return i * 2
  })
  
  if fn.Contains(nums, 2) {
    fmt.Println("nums contains 2!")
  }
}

Supported Functions

Arrays / Slices

Maps

See the open issues for a full list of proposed features (and known issues).

Contributing

If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement".

  1. Fork the Project
  2. Create your Feature Branch (git checkout -b feature/newfunction)
  3. Commit your Changes (git commit -m 'Adds fn.NewFunction')
  4. Push to the Branch (git push origin feature/newfunction)
  5. Open a Pull Request

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Twitter - @billy_the_kid Project Link: https://github.com/birwin93/fn

Owner
Billy Irwin
Billy Irwin
https://github.com/birwin93/fn
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Comments
  • Changes interface for fn.Last

    Changes interface for fn.Last

    Updates fn.Last to follow more idiomatic go patterns

    Before

    last, err := fn.Last(arr)
if err == nil {
    useLast(*last)
}

    Now

    last, ok := fn.Last(arr)
if ok {
   useLast(last)  
}

    This now works more like maps val, ok := someMap[key]

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