Literal Is Special Form of Object Creation

This section describes the concept of data literals being processed as __new() function calls.

The next concept of Object-Oriented programming is that a data literal is actually processed as a new object construction function call.

For example, a string literal will be processed by the H system with a call to the "string" object construction function, string.__new().

# H systems calls string.__new() internally with the given string.
message = "Hello world!";

By the way, using a data literal to create an object is more efficient than calling the class constructor in your code. For example,

# creates 1 "string" object
"Hello world!";

# creates 2 "string" objects:
# the first object is created when evaluating the argument
# the second object is created in the __new() function, 
# which is a copy of the fist object.
string.__new("Hello world!");

# same as string,__new("Hello world!");
string("Hello world!");

Last update: 2017.

Table of Contents

 About This Book

 Introduction of H Language

 Syntax

 Data Types

 Variables

 Expressions

 Statements

 "boolean" Data Type

 "integer" Data Type

 "string" Data Type

 "real" Data Type

 "array" Data Type

 Source Code Packages

 Classes and Objects

Object Oriented Programming

 What Is Object-Oriented Programming

 Objects Are Created from Classes

Literal Is Special Form of Object Creation

 Dot (.) Expression to Access Object Members

 Update Object with Object Methods

 Inheritance - Object Attachments

 Encapsulation - Private Members

 References

 PDF Printing Version