more helper functions

contains.go

@@ -0,0 +1,22 @@
+package slices
+
+func IndexOf[T comparable](slice []T, value T) int {
+	return IndexOfCmp(slice, value, DefaultEqualityComparator[T])
+}
+
+func IndexOfCmp[T comparable](slice []T, value T, cmp EqualityComparator[T]) int {
+	for i, v := range slice {
+		if cmp(v, value) {
+			return i
+		}
+	}
+	return -1
+}
+
+func Contains[T comparable](slice []T, value T) bool {
+	return ContainsCmp(slice, value, DefaultEqualityComparator[T])
+}
+
+func ContainsCmp[T comparable](slice []T, value T, cmp EqualityComparator[T]) bool {
+	return IndexOfCmp(slice, value, cmp) != -1
+}