variadic function

 Introduction:Before the possibilities of the newC + + language standard,c++11, the use ofTemplatesWas quite limited if it came to implementing for instancefunction Objects (functors)&Tuple Facilities. Implementing these sort of things using earlier

1, Introduction variadic functionA variable parameter function is a function that can change the number of parameters. e.g. printf ();int printf (const char *format, ...);printf ("%d%s\n", i,s);C language can support variadic functions, one of the

Differences in the compiler's implementation of the function pack extension for C + + 11 parameter templates (Variadic template)The topic is quite round the mouth. C + + 11 is not too much of a good thing, but the Variadic template is certainly one

3.6 Variadic MacrosA macro can is declared to accept a variable number of arguments much as a function can. The syntax for defining the macro was similar to that of a function. Here are an example: #define EPRINTF (...) fprintf (stderr,

Variadic Macros is function-like macros that contain a variable number of arguments.RemarksTo use Variadic macros, the ellipsis is specified as the final formal argument in a macro definition, and the Replacem ENT identifier __va_args__ May is used

Recently looking at K&r7.3 Chapter Variable-length Argument Lists variable length parameter list, take a note of usage1. header files to use Contains some macro (marco) definitions used to traverse (step through) variable-length parameter lists2.

By feng The introduction of Variadic Templates removes the cumbersome template features.Example: 123456789101112131415161718192021 #include   double do_sum() {     return 0; }   templatetypename T, typename... Args > double do_sum( T&&

During the learning process operation testing the Linux exec function, a very simple piece of test code was written, as follows: 650) this.width=650; "Src=" http://s4.51cto.com/wyfs02/M02/88/5C/ Wkiol1fzyaybbmjbaaatd1678rc582.png "title=" screenshot

1#include 2 using namespacestd;3 voidPrintall (intn,...) {4 int*ptr;5PTR = &N;6 while(*ptr) {7coutEndl;8ptr++;9 }Ten } One intMain () { APrintall (3,4,5,0); - } - Output: the 3 - 4 - 51. function head Writing form of variable parameter

I used a technical training course in the company to talk about how to expand variable template parameters, specifically how to print variable template parameters, I have a few points, there are many kinds of, below to see how many different ways to