reorganized source, added test cases for tuning

src/generics.go

@@ -0,0 +1,12 @@
+package main
+
+// find an item in a list, generic variant
+func Contains[E comparable](s []E, v E) bool {
+	for _, vs := range s {
+		if v == vs {
+			return true
+		}
+	}
+
+	return false
+}