$method Statement - Define Object Method

This section describes the $method statement for defining object (or instance) methods.

The $method statement is for defining object (or instance) methods within the instance template definition body using the following syntax:

$class class_name: {
   $instance template_name: {
      $method template_name.method_name(): {...};

An object method is a special function that has an implicit argument refers to an object to which this function is applied.

Example of $method statements:

$class user: {
   $instance x: {
      x.login = "guest";
      x.password = "DontTell";

      # $method statement to define an object method
      $method x.changePassword(newPassword): {
         x.password = newPassword;

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


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