(reprinted from Http://blog.kenyang.net/2011/03/java-staticfinal.html) I've learned a long time ago thatNot only to know know how,And know know why,For example, when I send work to the people below,For example, to make a feature that sends mail,Well, with the gift of Google God, it's usually quick to find code that sends mail.But when I go through every line of code,Mostly ..... Don't know. "I feel this wind is not long.Even some of the students don't know when to use static and final.Also do no
operator, and followed by the operators to be clarified, finally, add the exact sequence number to the corresponding sequence.In the following exampleStructIn hourPublicStaticHourOperator+(Hour LHS, hour RHs ){...}
Operator re-Attention method:1. the distinct operator re-Attention method.2. After the examples are completed, run the following operators:The following example uses the token to describe:
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Introduction has never written a conceptual article, because I think that these conceptual things are written in the books and are very detailed and useless, and today I have a whim to write, Here is a discussion of the virtual base class, virtual functions and pure virtual functions, a look at the name of the people can easily feel confused. But don't worry, you'll understand when you've finished reading this. Body Virtual base class read a piece of code before stating its usefuln
Introduction
I have never written a conceptual article, because I think it is useless to write these conceptual things in detail in books, today, I want to write a piece of whimsy. I will discuss with you the virtual base classes, virtual functions, and pure virtual functions. It is easy to get confused when you look at the name. But it doesn't matter. You will understand it after reading this article.
Body
Virtual base classLet's take a look at a piece of code before explaining its role.Class
{
IntroductionHas never written a concept of the article, because I think these conceptual things in the book have and said also very detailed written also useless, today's whim want to write a write, the following discussion with you about virtual base class, virtual function and pure virtual function, a look at the name let people easily feel confused. But it doesn't matter that you will understand it after you finish reading this article.BodyVirtual base classLook at a piece of code before expl
Don't talk about anything. paste the code first. Enter the following code in vs2010 (the Mac Book is out of power (I don't want to find the power source, but cannot test it in Mac OS xcode ))
//A.c fileintiValue;
//B.c fileintiValue;
//main.c file#include
The C language has the following standards:
When a variable is not initialized during peripheral declaration, the variable cannot be defined. For example: int ivalue; this code is not defined and ca
Definition: the single-piece mode ensures that a class has only one instance and provides a global access point.
Implementation 1:
#include using namespace std;class CSingleton{public:static CSingleton* getInstance();static void cleanInstance();int getValue();void setValue(int iValue);private:int m_iValue;static CSingleton* m_pSingleton; CSingleton(); ~CSingleton();};CSingleton* CSingleton::m_pSingleton = NULL;CSingleton::CSingleton(){ cout }
get the integer value represented by the low position, and then add the values of each bit to get the final unsigned integer value. Convert a byte to the short type to obtain the unsigned integer value of the byte. Because a short value occupies two characters, we can convert it like this, in fact, only the short high byte is used.
Void unsigtounchar (unsigned char * pbuf, unsigned short ivalue){Pbuf [0] = (unsigned char) (
1. The reference is an alias. The reference is just another name of the object.
2.Code:
Int ivals = 1024;
Int ref = ival;
3. Define multiple referencesCode:
Int ival = 1024; iival = 1025;
Int ref1 = ival, ref2 = iival;
4. A const reference is a reference to a const object.Code:
Const int ival = 1024;
Const Int ref = ival;
Int ref2 = ival; // Error
5.Code:
// Compilation failed
Float ivalue = 3.14;
Int Reff =
that the data type of the _get and _set events is independent of the data type of the property, in other words, although the data type of the Gender property is char *, But it can also accept Boolean types.The last two macros are: _release, which frees the memory it allocates, End_property, its End property declaration, and all two macros accept the property name as a parameter.
Implementation of attributes
After declaring the property, you need to implement set () and get (), see the following
In actual work, the conversion of strings and other data types is very common, there are many library functions, such as atoi , strtol ,sscanf , and so on, these functions online has a lot of information,What I often use is that hexadecimal values are transmitted as strings and then parsed, and here's what I'm doing here:Converts a 2-byte hexadecimal string into a short int with 2 bytes of shaping data:Writing is not easy, reproduced please specify the source: http://blog.csdn.net/jscese/article
-- 00010000000000000000000000000000When 29 then 536870912 -- 00100000000000000000000000000000When 30 then 1073741824 -- 01000000000000000000000000000000Else 0EndReturn (@ BYT)EndGo
If exists (select * From DBO. sysobjects where id = object_id (n' [DBO]. [md5_lshift] ') and xtype in (n'fn', n'if', n'tf '))Drop function [DBO]. [md5_lshift]Go---*************************************** **************************************Create Function DBO. md5_lshift (@ Ival
The system internal creation type supports some internal creation parameters. For example, an int can be converted into a double type.
Then, how do we define the category or structure defined by ourselves as the specified category?
In the following example
When example. myintmethod (lunch) method is used, Example. the metric value of the myintmethod method is int type, but the actual metric value is hour. At this time, you need to modify the metric value, the sequence operator method uses the s
I thought. tounicode would work.
Result .........
On the front-end pageCodeType: gb2312In the action page, the gb2312 code becomes garbled.So we need to convert gb2312 code to ISO-8859-1// Transcoding from "gb2312" to "ISO-8859-1"Public String iso2gb (string Str ){Try {STR = new string (Str. getbytes ("ISO-8859-1"), "gb2312 ");} Catch (exception e ){System. Out. println ("Encoding Error! ");}Return STR;}Then convert the ISO-8859-1 to Unicode
Char [] archar = iso2gb (SEA). tochararray ();Int
void lua_pushvalue (lua_State *L, int index);
Copies a backup of a specified element to the top of the stack.
Ø void lua_replace (lua_State *L, int index);
Removes the specified Element and moves the other elements down.
Ø void lua_insert (lua_State *L, int index);
Move the elements at the top of the stack to the specified index.
Ø void lua_replace (lua_State *L, int index);
Replace the value at the top of the stack with the specified index element. Other elements remain unchanged.3. A simple
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