class self

#继承, this understanding is right, yours is mine, but mine is mine, but you have I also have, I do not rare you, so call the parent class, Self is me, not youclass you:    def __init__ (Self,name):         self.name=name    def youmoney (self):       

The advantage of the Objective-c language is that we are more flexible when writing code, such as we can forward the message to the object we want, or swap the implementation of a method at random. This feature means that objective-c requires not

This example describes the static and const keyword usages in PHP. Share to everyone for your reference, specific as follows: The member properties and member functions that the static keyword describes in the class are static. A static member can

each time the internal method is called, the method is preceded by self. Class MyClass:def __init__ (self):Passdef func1 (self):# do somethingPrint (' a ') #for exampleSelf.common_func ()def func2 (self):# do somethingSelf.common_func ()def

http://blog.csdn.net/wklken/article/details/6313265First, class definition:Class After a class is instantiated, its properties can be used, and in fact, after a class is created, its properties can be accessed through the class nameIf you modify its

25.three quotation marksPython uses three quotation marks to refer to large pieces of text, and can write any single double quotation mark in the middle26.Original Characterwhen there are too many symbols in a string that need to be escaped, the

Python Notes-Class definitionsFirst, class definition:Class After a class is instantiated, its properties can be used, and in fact, after a class is created, its properties can be accessed through the class nameIf you modify its properties directly

The use of common keywords in PHP object-oriented:1. The Final:final keyword can be added before a method in a class or class, but the final identity member property cannot be used.Function: A class that uses the final identity and cannot be

#!/usr/bin/python#-*-encoding:utf-8-*-classAnimal:animal_num=0classDog (Animal):#Class Help documentation ' This is help' #two underscore, class's private property, cannot be accessed outside the class, Self.__dog_name access is used inside

One, the destructor in the Class (__destruct): Destructors are automatically called. Destructors are primarily used to destroy resources The order in which the destructors are called is the object that was created first and then

Reflection1. Importing modules as strings2. In the form of a string, go to the module to find the specified function and execute" "def f1 (): Return ' F1 ' def f2 (): Return ' F2 '" "#Let's say the above is the contents of a py file called

When I first started to learn Python's class writing, I found it very troublesome, why we need to call when the definition is not needed, why not internal simplification to reduce the number of keystrokes we hit? You will understand all the

In the network application, sometimes needs to the user equipment network state to carry on the real-time monitoring, has two purposes:(1) Let users understand their own network status, to prevent some misunderstandings (such as the use of strange

from:http://www.ajaxwing.com/index.php?id=2One, backgroundLooking back at the development of programming languages, it's not hard to see that this is a process that is constantly encapsulated: from the beginning of assembly language, to the

"Only for technical exchanges, without permission to prohibit the reprint"Usually app-server uses the HTTP protocol to tell the app what it needs to display the picture, text. This is one of the most common protocols. Another kind of client-side

Sometimes it's not perfect. Some people may have saved some files, but he has changed the extension so that it is within our file type. The actual access is not displayed (because the extension does not match the contents of the file). Here's a PHP

Control the number of instances of the PHP Class! In order to ensure the efficient use of server resources, and a class, such as templates Ah, database what, in a page only need to instantiate once! That is, running only one instance in memory! To

The object model of C languageObject-oriented features mainly include:. encapsulation, hiding internal implementations. Inheritance, reusing existing code. polymorphism, overwriting object behavior1.1 PackageEncapsulation is a kind of information

1, inherited extends only single inheritance Public protected Private Property __construct () __destruct () __get () Read Private members __set ($n, $v) set up private members 2, access to the parent class function:: (c + + inside also called the

When we rewrite the Init method of the parent class, we do not notice that the first letter after Init is written in lowercase, and in this method it calls the initialization method of the parent class (self = [super init];) and the error message