feat: add FilterByValues function

maputil/map.go

@@ -110,6 +110,19 @@ func FilterByKeys[K comparable, V any](m map[K]V, keys []K) map[K]V {
 	return result
 }
 
+// FilterByValues iterates over map, return a new map whose values are all given values.
+// todo:
+func FilterByValues[K comparable, V comparable](m map[K]V, values []V) map[K]V {
+	result := make(map[K]V)
+
+	for k, v := range m {
+		if slice.Contain(values, v) {
+			result[k] = v
+		}
+	}
+	return result
+}
+
 // Intersect iterates over maps, return a new map of key and value pairs in all given maps.
 // Play: https://go.dev/play/p/Zld0oj3sjcC
 func Intersect[K comparable, V any](maps ...map[K]V) map[K]V {

maputil/map_test.go

@@ -168,6 +168,25 @@ func TestFilterByKeys(t *testing.T) {
 	}, acturl)
 }
 
+func TestFilterByValues(t *testing.T) {
+	assert := internal.NewAssert(t, "TestFilterByValues")
+
+	m := map[string]int{
+		"a": 1,
+		"b": 2,
+		"c": 3,
+		"d": 4,
+		"e": 5,
+	}
+
+	acturl := FilterByValues(m, []int{3, 4})
+
+	assert.Equal(map[string]int{
+		"c": 3,
+		"d": 4,
+	}, acturl)
+}
+
 func TestIntersect(t *testing.T) {
 	assert := internal.NewAssert(t, "TestIntersect")