slices/filter.go

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2022-09-17 00:04:53 +02:00
package slices
func Filter[T any](slice []T, f func(T) bool) []T {
ret := make([]T, 0, len(slice))
for _, v := range slice {
if f(v) {
ret = append(ret, v)
}
}
return ret
}
func FindFirst[T any](slice []T, f func(T) bool) (T, bool) {
for _, v := range slice {
if f(v) {
return v, true
}
}
return *new(T), false
}
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func FindFirstIndex[T any](slice []T, f func(T) bool) (int, bool) {
for i, v := range slice {
if f(v) {
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return i, true
}
}
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return -1, false
}
func FindLastIndex[T any](slice []T, f func(T) bool) (int, bool) {
for i := len(slice); i >= 0; i-- {
if f(slice[i]) {
return i, true
}
}
return -1, false
}