https://github.com/samwho/fu

A collection of functional utilities written in Golang.
https://github.com/samwho/fu

Last synced: about 2 months ago
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A collection of functional utilities written in Golang.

• Host: GitHub
• URL: https://github.com/samwho/fu
• Owner: samwho
• Created: 2019-05-18T12:30:26.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-05-26T15:34:48.000Z (over 5 years ago)
• Last Synced: 2024-10-14T20:39:51.737Z (3 months ago)
• Language: Go
• Size: 35.2 KB
• Stars: 3
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# fu: functional utilities

If you miss your maps, reducers and filters from other languages, and don't mind manually unwrapping `interface{}`s, this library is for you.

## Mapping

```go

ctx := context.Background()

ns := []interface{}{1, 2, 3, 4, 5}

ms, err := fu.MapFn(ctx, ns, func(ctx context.Context, i interface{}) (interface{}, error){

  n, ok := i.(int)

  if !ok {

    return errors.New("invalid type")

  }

  return n + 1

})

if err != nil {

  return err

}

fmt.Printf("%v\n", ms) // []interface{}{2, 3, 4, 5, 6}

```

Or as a shorthand:

```go

ctx := context.Background()

ns := []interface{}{1, 2, 3, 4, 5}

ms, err := fu.Map(ctx, ns, fu.Add(1))

if err != nil {

  return err

}

fmt.Printf("%v\n", ms) // []interface{}{2, 3, 4, 5, 6}

```

And if you want to do stuff in parallel:

```go

ctx := context.Background()

ns := []interface{}{1, 2, 3, 4, 5}

ms, err := fu.ParallelMap(ctx, ns, fu.Add(1))

if err != nil {

  return err

}

fmt.Printf("%v\n", ms) // []interface{}{2, 3, 4, 5, 6}

```