c copy assignment operator

#include using namespacestd;classfi{ Public: Fi () {cout"Fi::fi ()"Endl;}};classfee{ Public: Fee (int) {cout"fee::fee (int)"Endl;} Fee (Constfi) {cout"Fee::fee (fi)"Endl;} feeoperator=(Constfee RHS) {cout"fee::operator="Endl;if (THIS!=RHS) {//perform Assignment}return *this; }};intMain () {Fee Fee=1;//Fee (int)fi fi; Fee Fum=fi;//Fee (Fi);Fum=fi;//first, a fee object is constructed with fi, and then the

Most of the assignment operators are vb.net new operators, except for "=" (Assignment number), other assignment operators generally perform arithmetic operations when assigning values to variables, such as: i+=1 equivalent to I=i+1 The following table is the commonly used assignment

This is a C + + face test, the following in this blog to analyze the problem. First on the topic:Title: The following is a declaration of type cmystring, please add an assignment operator function for that type. Class cmystring{public:cmystring (char *pdata=null);//constructor cmystring (const cmystring str);//copy constructor ~cmystring () ;//destructor private:char* m_pdata;//data field, character pointer

Once a variable is given a value, it can be referenced with the variable name. The following expression represents the addition of the value of the variable x and 1 and assigns the result to the variable y:Y=X+ 1That is, the value of x plus 1 is computed and the result is assigned to the variable Y. StatementPrint YPrints the value of Y. If the following series of statements will appear in the script:X=1Y=X+1Print YThen the value of Y is 2.We can reduce these 3 statements to two:X= 1Print X+1 No

The basic assignment operator is "=". You tend to think that it means "equals". Don't think so, what it really means is that the left-hand operand gets the value of the right-hand expression. The meaning of an assignment expression is the assignment of a value. In other words, the value of "$a = 3" is 3. This allows yo

The basic value assignment operator is "". You tend to think that it means "equal ". Don't think so. the true meaning of this is that the operand on the left gets the value of the expression on the right. A value assignment expression is used to assign values. That is to say, the value of "$ a3" is 3. This allows you to do this: $ a ($ b4) + 5; $ aisequalt's basi

Suppose we create a class to save a bitmap with a pointer pointing to a dynamic allocation) Class bitmap {...};Class widget{Public:Protected:PRIVATE:Bitmap * pb;}; This operator = makes the Code look reasonable on the surface, but it is not safe when self-assignment occurs, and it does not have exceptional security. Widget Widget: Operator = (const widget

First, the topicThe following is the type cmystring, which adds an assignment operator function to the type.1 classcmystring2 {3 Public:4CMyString (Char*pData)5 {6M_pdata =New Char[Strlen (PData) +1];7 strcpy (M_pdata, pData);8 }9 Ten cmystring (): M_pdata (NULL) {} One A -CMyString (Constcmystringstr); - the~cmystring () - { - delete []m_pdata; - } + -cmystringoperator=(Constcmystr

The assignment operator in PHP performs different actions on different data types. First, explain the behavior of the value assignment operator =. See the following example: Copy the code as follows: $ i0; $ j $ I; $ j0; echo $ j; print the output 0 $ arrarray (0); $ arr2 $ arr; $ arr2 [0 First explains the behavior of

[Note] C # basic introduction -- the value assignment operator of C, In addition to the value assignment operator "=", there are other value assignment operators: Add the value "+ = ":Add first and then assign values. See the following example: Int x = 5; x + = 2; // This

Please add an assignment operator function for the cmystring type650) this.width=650; "src=" http://s2.51cto.com/wyfs02/M01/7F/32/wKiom1cWJLbj58pzAACprjaWXpw691.jpg "style=" float: none; "Title=" C3. JPG "alt=" Wkiom1cwjlbj58pzaacprjawxpw691.jpg "/>Shallow copy:650) this.width=650; "src=" http://s2.51cto.com/wyfs02/M01/7F/30/wKioL1cWJXahUzgfAACFmhzbCp0009.jpg "style=" float: none; "Title=" C4. JPG "alt=" Wk

PHP Tutorial Assignment operatorThe basic assignment operator is "=". At first you might think it's "equal", but it's not. It actually means assigning the value of the right expression to the left-hand operand. The value of an assignment expression is the value assigned. In other words, the value of "$a = 3" is 3. So

This article introduces in detail the copy constructor in PHP, the assignment operator overload of the detailed, there is need to understand the students can refer to the next OH. Assignment and replication of an object: assignment: Overloading with the "=" operator

Self-assignment occurs when an object is assigned to itself: Class widget { ... } Widget W; ... W = W // assign a value to yourself There is also an implicit example of self-assignment: A [I] = A [J]; // when I = J The following is a class: Class bitmap {}; Class widget { ... PRIVATE: Bitmap * pb; }; L version 1 Widget Widget: Operator