C++11 Function Usage Scenarios

"1" Scenario analysis

Within a function, a piece of code may be used more than once, and the general case is to encapsulate the code in a number of times into a function.

However, if this code is used only in this function, then encapsulating the function is cumbersome and redundant.

So, is there a way to generate a " temporary function ", and the "temporary function" life cycle is only in this function? The C++11 can be implemented using function mates with lambda expressions.

"2" code example

A simple example is as follows:

1#include <iostream>2#include <functional>3 4 classA5 {6  Public:7     voidFuncold (intXinty)8     {9         //-----Code SectionTenAuto S1 = x +y; One         //-----Code Section AAuto S2 = x +y; -         //-----Code Section -Auto S3 = x +y; the  -Std::cout <<"sum::"<< S1 + s2 + s3 <<Std::endl; -     } -  +     voidFuncintXinty) -     { +Auto FUNC1 = [ This](intXinty) A         { at             returnX +y; -         }; -  -Auto S1 =func1 (x, y); -  -Auto S2 =func1 (x, y); in  -Auto S3 =func1 (x, y); to  +Std::cout <<"sum::"<< S1 + s2 + s3 <<Std::endl; -     } the }; *  $ voidMainintargcChar*argv[])Panax Notoginseng { -      for(Auto C: {"Hello World!!!"})//c++17 for the     { +Std::cout <<C; A     } the  +Std::cout <<Std::endl; - A; $A.func (2,3); $  -System"Pause"); - } the  - //run out:Wuyi /* the Hello World!!! - sum:: Wu Please press any key to continue ... - */

Good good Study, day.

Sequential Selection Cycle Summary

C++11 Function Usage Scenarios