* This article describes the classes and objects in PhP5 series.
Article The general framework of the PhP5 object system is introduced, but some features are not described in detail. We strongly recommend that you read this article after reading
1. What is const?
A common type is a type described by the Type modifier Const. a variable or object Value of a common type cannot be updated.
. (Of course, we can steal the bar for updating :)
2. Why is const introduced?
The initial purpose
When we use autolayout to automatically layout A uiview, it means that we give up the traditional
Manually modify and determine the position and size attributes of a view by setting its frame. Even from some
To a certain extent, we should forget
Http://www.cppblog.com/yuanyajie/
This article discusses a simple but effective plug-in architecture. It uses C ++, dynamic link library, and is based on the idea of object-oriented programming.First, let's take a look at what benefits the plug-in
Ro, RW, and Zi data section in arm Compilation
Arm program (the program being executed in the arm system, rather than the binfile stored in the ROM)
An arm program contains three parts: RO, RW, and Zi segments.
Ro is the instruction and constant in
Http://www.2cto.com/kf/200609/13539.html
Because the field declared in Java interface is automatically added with the static final modifier during compilation, it is declared as a constant. Therefore, interfaces are usually the best place to store
Original: http://topic.csdn.net/u/20090519/18/7b8cf7ef-bc06-4d26-8a2c-692eb0562231_2.html
Author: zangxt
The string class is a very important class in Java. Here we will summarize the special features of this class. The following documents are
1. What is const?A common type is a type described by the Type modifier Const. The values of variables or objects of a common type cannot be updated. (Of course, we can steal the bar for updating :)
2. Why is const introduced?The initial purpose of
The space of a constant defined by const is released after the function is executed, while the static constant defined by static is not released after the function is executed.
Static indicates static. Static member functions of a class. member
Reference TypeReference is also called an alias (alias ). It can be used as another name of an object. through reference, we can indirectly manipulate objects. the usage is similar to a pointer, but the pointer syntax is not required. in actual
Recently, I want to set the compilation parameters for each SWF to better control the SWF generation. Therefore, I need to first understand the command usage of mxmlc:
Mxmlc Parameter options
Description
Accessible = true |
[Android Application Development] the Android code specification is being updated...
.
Introduction: Common Android code structures, including package specifications, test case specifications, and common writing specifications for database modules;
Format function and Format input and output in CStringFormat function and Format input and output in CString
Format is a very common but annoying method. The following is a complete overview of it for your query:Formatting string forma (% d, 12)
How to add an animation and autolayoutuiview to the UIView using autolayout
When we use autolayout to automatically layout A UIView, it means we give up.
Traditionally, You can manually modify and determine the position and size attributes of a
Introduction
Python has a few built-in constants, only 6, True, False, None, notimplemented, ellipsis, __debug__.
one. True
1. True is a constant of type bool used to represent truth.
>>> truetrue>>> type (True)class'bool' >
2. Any
Author: du gang
In the software development process,ProgramCodeIs a very important concept. We always need to use some existing modules, packages, frameworks, or develop our own modules, packages, and frameworks to reuse program code. For example,
The C # language has two different constants: A complie-time constant and a runtime constant. The two constants have different behaviors. Incorrect use may lead
Program Or an error occurs. The compile time is a little faster than the run time, but
There are two ways to define constants in C,
One is compile-time constant and the other is runtime constant ).
The former is defined by "const", and the latter is defined by "readonly.
For a static constant (compile-time constant), the writing
This chapter focuses on issues related to preprocessing procedures. Run the Preprocessing Program before compiling the program. Maybe you have never seen this program before, because it usually runs behind the scenes, and programmers cannot see it.
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