Function Exclude

pkg/sliceutil/sliceutil.go:123–140

Exclude returns a new slice containing the items from base that do not appear in the exclude set. Order of remaining items is preserved. Always returns a fresh slice (never aliases base) even when no items are removed.

(base []T, exclude ...T)

// in the exclude set. Order of remaining items is preserved.
// Always returns a fresh slice (never aliases base) even when no items are removed.
func Exclude[T comparable](base []T, exclude ...T) []T {
	if len(exclude) == 0 {
		return append([]T(nil), base...)
	}

	excluded := make(map[T]struct{}, len(exclude))
	for _, item := range exclude {
		excluded[item] = struct{}{}
	}

	result := make([]T, 0, len(base))
	for _, item := range base {
		if _, isExcluded := excluded[item]; !isExcluded {
			result = append(result, item)
		}
	}
	return result
}