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feat: a more convenient Result interface #42

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feat: a more convenient Result interface #42

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11 changes: 8 additions & 3 deletions core/result/result.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,18 +8,23 @@

// Result is a golang compatible generic result type
type Result[O any, X any] interface {
isResult(ok O, err X)
Ok() *O
Err() *X
}

type okResult[O any, X any] struct {
value O
}

func (o *okResult[O, X]) Ok() *O { return &o.value }
func (o *okResult[O, X]) Err() *X { return nil }

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core/result/result.go#L19-L20 

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type errResult[O any, X any] struct {
value X
}

func (o *okResult[O, X]) isResult(ok O, err X) {}
func (e *errResult[O, X]) isResult(ok O, err X) {}
func (e *errResult[O, X]) Ok() *O { return nil }
func (e *errResult[O, X]) Err() *X { return &e.value }

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core/result/result.go#L26-L27 

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// MatchResultR3 handles a result with functions returning 3 values
func MatchResultR3[O any, X any, R0, R1, R2 any](
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