PHP object-oriented programming (oop) learning notes (2)-static variable attributes and methods and latency binding. Static keywords are used to define static methods and attributes. Static keywords can also be used to define static variables and
In the first version of iOS:We declare both the property and the underlying instance variable for the output, when the property is a new mechanism for the OC language, and you must declare the instance variable that corresponds to it, for
1. Basic concepts of Control Properties
This section describes the basic content about creating server control attributes, including: (1) property types and forms; (2) attributes inherited from control and webcontrol; (3) the metadata attribute
Static keywords are used to define static methods and attributes. Static keywords can also be used to define static variables and Static binding later.
1,Static variable
Static variables only exist in local function domains, but their values are not
Previous Series
Article I have already listed several examples for implementing custom server controls. Through these examples, the reader has a preliminary idea about creating server control attributes. For example, you can use private variables,
There are five attributes of a variable:
(1) name (description must be displayed)
(2) type (the description must be displayed)
(3) Storage category (default mode or display description (Use: auto, register, static, extren ))
(4) scope (determined by
CLR attributes and dependency attributes
CLR attributes are very familiar to us and can be seen everywhere in DOTNET programming. The simplest and most common property accessors are private members who directly manipulate the class, as
Link: http://blog.csdn.net/ccaakkee/article/details/2425950,CSDN ccaakkee
Http://blog.csdn.net/jaydawson/article/details/5539438,CSDN jaydawson
Code:
Using system; using system. collections. generic; using system. LINQ; using system. text; using
One, what is deferred environment variable extension?
Delay variable Full name "Delay environment variable extension", to understand this thing, we have to understand what is called variable expansion!When we explain our command, CMD will first
The shell is a programming language, a command interpreter, which is the kernel that interprets the commands we enter.He is divided into two types, the interactive mode is that the shell waits for your input, and executes the commands you submit;
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