feat: add Pop for set

datastructure/set/set.go

@@ -181,3 +181,15 @@ func (s Set[T]) EachWithBreak(iteratee func(item T) bool) {
 		}
 	}
 }
+
+// Pop delete the top element of set then return it, if set is empty, return nil-value of T and false.
+func (s Set[T]) Pop() (v T, ok bool) {
+	if len(s) > 0 {
+		items := s.Values()
+		item := items[len(s)-1]
+		delete(s, item)
+		return item, true
+	}
+
+	return v, false
+}

datastructure/set/set_test.go

@@ -209,3 +209,23 @@ func TestEachWithBreak(t *testing.T) {
 	assert := internal.NewAssert(t, "TestEachWithBreak")
 	assert.Equal(6, sum)
 }
+
+func TestPop(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPop")
+
+	s := NewSet[int]()
+
+	val, ok := s.Pop()
+	assert.Equal(0, val)
+	assert.Equal(false, ok)
+
+	s.Add(1)
+	s.Add(2)
+	s.Add(3)
+
+	// s = NewSet(1, 2, 3, 4, 5)
+
+	val, ok = s.Pop()
+	assert.Equal(3, val)
+	assert.Equal(true, ok)
+}