Adds a function to test that a list contains at least one occurrence of an element

pkg/goutils/goutils.go

@@ -160,3 +160,13 @@ func ReadLines(path string) (lines []string, err error) {
 	}
 	return
 }
+
+
+func Contains[T comparable](arr []T, x T) bool {
+    for _, v := range arr {
+        if v == x {
+            return true
+        }
+    }
+    return false
+}