t.Fatalf("errors happened when update: %v", err)
	}

	var user4 User
	DB.Preload("Pets").Find(&user4, "id = ?", user.ID)
	CheckUser(t, user4, user)

	t.Run("Polymorphic", func(t *testing.T) {
		user := *GetUser("update-has-many", Config{})

		if err := DB.Create(&user).Error; err != nil {
			t.Fatalf("errors happened when create: %v", err)
		}

		t.Fatalf("Set Update many2many clear failed: %v", err)
	} else if rows != 0 {
		t.Fatalf("expected 0 rows affected, got %d", rows)
	}
	AssertAssociationCount(t, user, "Languages", 0, "after clear")
}

// Polymorphic Tools create and unlink
func TestClauseAssociationSetUpdatePolymorphicTools(t *testing.T) {
	ctx := context.Background()
	user := User{Name: "TestClauseAssociationSetUpdatePolymorphicTools", Age: 25}

	// Find
	var toys []Toy
	if DB.Model(&users).Association("Toys").Find(&toys); len(toys) != 6 {
		t.Errorf("toys count should be %v, but got %v", 6, len(toys))
	}

	// Find Tools (polymorphic with custom type and id)
	var tools []Tools
	DB.Model(&users).Association("Tools").Find(&tools)

	if len(tools) != 2 {
		t.Errorf("tools count should be %v, but got %v", 2, len(tools))
	}

	// Append

### **Autoscaling**

*   HorizontalPodAutoscaler objects now properly functions on scalable resources in any API group. Fixed by adding a polymorphic scale client. ([#53743](https://github.com/kubernetes/kubernetes/pull/53743),[ @DirectXMan12](https://github.com/DirectXMan12))

<code>Add</code> and <code>Slice</code>.
</li>
</ul>

<h4 id="Go_1.18">Go 1.18</h4>
<p>
The 1.18 release adds polymorphic functions and types ("generics") to the language.
Specifically:
</p>
<ul>
<li>
The set of <a href="#Operators_and_punctuation">operators and punctuation</a> includes the new token <code>~</code>.
</li>