51 lines
923 B
Go
51 lines
923 B
Go
package channel
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type Result[T any] struct {
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value *T
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err error
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}
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func ResultOf[T any](value T, err error) Result[T] {
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if err != nil {
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return Result[T]{value: nil, err: err}
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}
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return Result[T]{value: &value, err: nil}
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}
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func WrapMapFunc[I, O any](f func(I) (O, error)) func(I) Result[O] {
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return func(i I) Result[O] { return ResultOf(f(i)) }
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}
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func WrapMapResultFunc[I, O any](f func(I) (O, error)) func(Result[I]) Result[O] {
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resFunc := WrapMapFunc(f)
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nilValue := *new(O)
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return func(r Result[I]) Result[O] {
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v, err := r.Get()
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if err != nil {
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return ResultOf(nilValue, err)
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}
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return resFunc(v)
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}
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}
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func (r Result[T]) Success() bool {
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return r.err == nil
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}
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func (r Result[T]) Fail() bool {
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return !r.Success()
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}
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func (r Result[T]) GetOrDefault(defaultValue T) T {
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if r.Fail() {
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return defaultValue
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}
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return *r.value
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}
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func (r Result[T]) Get() (T, error) {
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return *r.value, r.err
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}
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