https://github.com/richjyoung/wtf

wtf.IsThis Golang Package
https://github.com/richjyoung/wtf

Last synced: 8 days ago
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wtf.IsThis Golang Package

• Host: GitHub
• URL: https://github.com/richjyoung/wtf
• Owner: richjyoung
• License: mit
• Created: 2022-11-22T00:00:56.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2022-11-22T09:25:35.000Z (almost 2 years ago)
• Last Synced: 2024-06-20T12:52:49.057Z (5 months ago)
• Language: Go
• Size: 8.79 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# wtf.IsThis

Golang is great until at runtime you are dealing with an interface for which the underlying implementation is buried in a package somewhere.

Yes it's easier than other languages to click through and find it, or...

```golang

wtf.IsThis(1)                              // int

wtf.IsThis("Hello, World!")                // string

wtf.IsThis(AStruct{})                      // pkg.AStruct

wtf.IsThis(&AStruct{})                     // *pkg.AStruct

wtf.IsThis([]*AStruct{})                   // []*pkg.AStruct

wtf.IsThis(map[int]*AStruct{})             // map[int]*pkg.AStruct

wtf.IsThis(make(<-chan int))               // <-chan int

wtf.IsThis(func(int) error { return nil }) // func (int) error {}

// In cases where the type is nil or contains an empty interface, wtf.NoIdea is returned.

wtf.IsThis(nil)                            // ¯\_(ツ)_/¯

wtf.IsThis(map[string]interface{}{})       // map[string]¯\_(ツ)_/¯

// Provides more detail for errors which may implement Unwrap

e1 := fmt.Errorf("error 1")

e2 := fmt.Errorf("error 2 - %w", e1)

e3 := fmt.Errorf("error 3 - %w", e2)

wtf.IsThisError(e3) // Returns:

// *fmt.wrapError[error 3 - error 2 - error 1]

// └─*fmt.wrapError[error 2 - error 1]

//   └─*errors.errorString[error 1]

```

More examples in the [test](./wtf_test.go).