36 lines
734 B
Go
36 lines
734 B
Go
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package slice
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// FilterType returns a subset that matches the type.
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func FilterType[T any](in ...any) []T {
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lis := make([]T, 0, len(in))
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for _, u := range in {
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if t, ok := u.(T); ok {
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lis = append(lis, t)
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}
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}
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return lis
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}
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// Find returns the first of type found. or false if not found.
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func Find[T any](in ...any) (T, bool) {
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return First(FilterType[T](in...)...)
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}
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// First returns the first element in a slice.
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func First[T any](in ...T) (T, bool) {
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if len(in) == 0 {
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var zero T
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return zero, false
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}
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return in[0], true
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}
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// Map applys func to each element s and returns results as slice.
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func Map[T, U any](s []T, f func(T) U) []U {
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r := make([]U, len(s))
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for i, v := range s {
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r[i] = f(v)
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}
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return r
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}
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