39 lines
547 B
Go
39 lines
547 B
Go
package channel
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import "context"
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func FindFirst[T any](source <-chan T) *T {
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for v := range source {
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return &v
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}
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return nil
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}
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func FindFirstAndCancel[T any](source <-chan T, cancel context.CancelFunc) *T {
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defer cancel()
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for v := range source {
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return &v
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}
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return nil
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}
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func FindLast[T any](source <-chan T) *T {
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var last *T = new(T)
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found := false
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for v := range source {
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*last = v
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found = true
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}
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if !found {
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return nil
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}
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return last
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}
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func HasAny[T any](source <-chan T) bool {
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return FindFirst(source) != nil
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}
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