portainer/api/internal/slices/slices.go

package slices

// Contains is a generic function that returns true if the element is contained within the slice
func Contains[T comparable](elems []T, v T) bool {
	for _, s := range elems {
		if v == s {
			return true
		}
	}
	return false
}

// IndexFunc returns the first index i satisfying f(s[i]),
// or -1 if none do.
func IndexFunc[E any](s []E, f func(E) bool) int {
	for i, v := range s {
		if f(v) {
			return i
		}
	}
	return -1
}