static binding

Usage Scenarios First look at the following code: Abstract class Base { //do sth}class AClass extends base{public static function create () { return new AClass () ; } }class Bclass extends base{public static function create () { return

This article will introduce PHP's late static binding function, which is primarily used to resolve classes that reference static calls within the inheritance scope. First look at the following example: The code is as follows: Class Person {

php5.3 has started to support lazy static bindings.Lazy static binding refers to getting the final state of a subclass in the parent class. In the parent class, if the Self keyword appears, after the quilt class inherits, the self value is still the

The following points are from the introduction to MFC: Which function is called depends on the original type of the pointer, and the object actually referred to by the pointer is irrelevant. 1. If you direct a "base class Pointer" to a "derived

TopologyAs the core device, s5700 configures DHCP and assigns an IP address to the office network.S2700 as access device S5700 Configuration VLAN 100Description bangong Interface gigabitethernet0/0/1Port Link-type trunkPort trunk allow-pass VLAN

This article describes the post-static binding functionality of PHP, which is primarily used to resolve classes that refer to static calls within an inherited scope. First look at the following example: Class person{public static function

Phpstatic delays static binding. If you are a lazy programmer, you may be annoyed with the following code: abstractclassU {} classu1extendsU {publicstaticfunctioncreate () {returnnewu1 () ;}} classu2e. if you are a lazy programmer, you may be

This article will introduce the static binding function of PHP later, It is primarily used to resolve classes that refer to static calls within an inherited scope。 First look at the following example: Copy the Code code as follows:Class

The first is that the parameter of the method is the parent class object, whether it is feasible to pass in the subclass objectThen the parent P = new Children ();This code is not very understanding, Google's process leads to the upward

PHP V5.3 solves some of the problems of object-oriented programming (OOP) through its deferred static binding (LSB) feature. Learn how LSB fixes the OOP programming problem in PHP and how to implement some well-known object-oriented design patterns

Initial knowledge of PHP static delay statically bindingPHP5.3 later introduced the lazy static binding static, which is to solve what problem? One of the long-running problems with the PHP inheritance model is that it is difficult to refer to the

This article will introduce PHP's late static binding function, which is primarily used to resolve classes that reference static calls within the inheritance scope . First look at the following example: Copy Code code as follows:

This article illustrates the way PHP delays static binding. Share to everyone for your reference. The specific analysis is as follows: PHP deferred static binding: The self of the class, not the definition, but the run-time result of the

Originally wanted to write their own, but see someone analysis can be said to be very clear, so turn around.Original address:http://www.cnblogs.com/ygj0930/p/6554103.htmlOne: BindingAssociating a method with the class/object in which it is located

The first is a set of code: Abstract class user {} class admin extends user {private $ group; public static function create () {return new admin ();} public static function getgroup () {return "admin ";}//....... other functions ..} Class

From: http://blog.csdn.net/wangyadong/archive/2009/03/27/4030024.aspx   In C ++, non-virtual functions are statically bound, while virtual functions are dynamically bound.To better understand static binding and dynamic binding, we can look at the

From: http://my.oschina.net/liuhui1990/blog/38611 PHP-based version: 5.3.5 After php5.3, delayed static binding is introduced: Static (Keyword) is similarSelf (Keywords)But it pointsCalled class (Document)InsteadInclude class

Returns an instance of this class using the return new self () in the old PHP version; However, there is a big drawback to this approach, which is that self refers to the context of the parsing context rather than the invocation. This article is

Let's look at an example: there is a virtual function and a non-virtual function in the widget class. The value of the pointer variable pwidget is NULL. Non-virtual and virtual functions are called through pointers.classwidget{ Public: Virtual

For static binding:: There is not much to explain here, I would like to use an example to prove that this example is from an official document: For example one: Class a{ Private Function foo () { echo "This is A test function". ""; }