add more style

pkg/slices/map.go

@@ -9,3 +9,9 @@ func Map[S any, E any](s []S, f func(S) E) []E {
 
 	return out
 }
+
+func ForEach[S any](s []S, f func(S)) {
+	for i := range s {
+		f(s[i])
+	}
+}