Clause 8: When writing operator new and operator Delete, it must follow the general rules.
When you rewrite operator new by yourself (cla10 explains why you sometimes rewrite it), it is important that the behavior provided by the function should
The operands of predefined operators in C + + can only be basic data types, and in fact, for many user-defined types, similar operations are Required. For example:Class Complex{PublicComplex (double r=0.0,double i=0.0) {real=r;imag=i;}void Display ()
Found a good article:Reproduced:This paper mainly summarizes the operator overloading and C + + operator overloading summary from C + +.What is operator overloadingOperator overloading is to give multiple meanings to existing operators, causing
"operator"at the time of the operation, if the closing parenthesis we know what to do first, then if there is no parentheses, arithmetic operators, relational operators, logical operators, bitwise operators, assignment operators, + + 、--operators,
Why is it necessary to write your own operator new and operator delete?
The answer is usually: for efficiency. The default operator new and operator Delete have a very good versatility. This flexibility also makes it possible to further improve its
[C ++ knowledge point Summary] OPERATOR & operator heavy load, knowledge point summary Operator[Operator]
When performing an operation, if we know which operation is performed first, if there are no parentheses, Arithmetic Operators, Relational
C ++ _ operator overload summary, operator overload Summary
What is an operator overload?
The combination of operators and classes produces new meanings.
Why is Operator overload introduced?
Purpose: To implement class polymorphism (polymorphism
The operations object of a predefined operator in C + + can only be a basic data type, and in fact, a similar operation is required for many user-defined types. For example:Class Complex{PublicComplex (double r=0.0,double i=0.0) {real=r;imag=i;}void
An operator is a particular symbol or expression used to examine, modify, or merge variables. For example, with the sum operator + you can sum two digits (such as let i = 1 + 2); a slightly more complex example has logic and operator && (e.g. if
The operations object of a predefined operator in C + + can only be a basic data type, and in fact, a similar operation is required for many user-defined types. For example:
Class Complex
{public
:
complex (double r=0.0,double i=0.0)
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.