__delete() - Object Destructor Method

This section describes what is object destructor method.

Object destructor method, __delete(), is a special object method automatically created by the H system when a $class statement is executed. You should never create your own version of __delete() method to override the system created version.

The syntax to call the destructor method is:


When an object is deleted, all references to this object will be assigned to $null.

Examples of calling object constructor functions:

# an empty class
$class dummy: {};

# create a "dummy" object
d = dummy(); 

# delete the "dummy" object
# d is assigned to $null after

Last update: 2017.

Table of Contents

 About This Book

 Introduction of H Language


 Data Types




 "boolean" Data Type

 "integer" Data Type

 "string" Data Type

 "real" Data Type

 "array" Data Type

 Source Code Packages

Classes and Objects

 What Is Class

 What Is Object

 $class Statement - Create New Classes

 Class Variables and Functions

 Execution of $class Definition Body

 __new() - Object Constructor Function

 $instance Statement - Define Instance Template

 Execution of $instance Definition Body

 Access Object Properties

 $method Statement - Define Object Method

 Access Object Methods

 _first() Method - Object Initialization

 Access Class Variables from Object Methods

__delete() - Object Destructor Method

 $delete Statement - Delete Objects

 _last() Method - Object Cleanup

 Object Oriented Programming

 Inheritance - Object Attachments

 Encapsulation - Private Members


 PDF Printing Version