std::ptr_fun
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template<class Arg, class Result > std::pointer_to_unary_function<Arg,Result> | (1) | (obsolète) |
template<class Arg1, class Arg2, class Result > std::pointer_to_binary_function<Arg1,Arg2,Result> | (2) | (obsolète) |
Creates a function wrapper object (either std::pointer_to_unary_function or std::pointer_to_binary_function), deducing the target type from the template arguments.
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This function and the related types are deprecated as of C++11 in favor of the more general std::function and std::ref, both of which create callable adapter-compatible function objects from plain functions.
Sommaire |
[modifier]Paramètres
| f | - | pointer to a function to create a wrapper for |
[modifier]Retourne la valeur
A function object wrapping f.
[modifier]Exceptions
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[modifier]Exemple
#include <string>#include <iostream>#include <algorithm>#include <functional>bool isvowel(char c){returnstd::string("aeoiuAEIOU").find(c)!=std::string::npos;}int main(){std::string s ="Hello, world!";std::copy_if(s.begin(), s.end(), std::ostreambuf_iterator<char>(std::cout), std::not1(std::ptr_fun(isvowel)));// C++11 alternatives: // std::not1(std::ref(isvowel)));// std::not1(std::function<bool(char)>(isvowel))); }
Résultat :
Hll, wrld!
