Added function allEqual - checks if all given values are equal

misc.go

@@ -27,3 +27,14 @@ func unique_append[T comparable](slc []T, items ...T) ([]T, int) {
 	}
 	return slc, num_appended
 }
+
+// Returns true only if all the given elements are equal
+func allEqual[T comparable](items ...T) bool {
+	first := items[0]
+	for _, item := range items {
+		if item != first {
+			return false
+		}
+	}
+	return true
+}