先贴cppreference中对for_each的概述: template<classInputIt,classUnaryFunction >//此处UnaryFunction为一元函数UnaryFunction for_each( InputIt first, InputIt last, UnaryFunction f ); 1) Applies the given function objectfto th
在cppreference官网for_each的描述中,有这么一段话: For both overloads, if the iterator type (InputIt/ForwardIt) is mutable,fmay modify the elements of the range through the dereferenced iterator. Iffreturns a result, the result is ignored. 也就是说,有返回值的函数是会被忽略掉的,所以...
ForwardIt first, Size n, UnaryFunc f); (2)(since C++17) Applies the given function objectfto the result of dereferencing every iterator in the range[first,first+n). Iffreturns a result, the result is ignored. 1)fis applied in order starting fromfirst. ...
std::ranges::for_each,std::ranges::for_each_result C++ Algorithm library Constrained algorithms, e.g.ranges::copy,ranges::sort, ... Constrained algorithms Defined in header<algorithm> Call signature template<std::input_iteratorI,std::sentinel_for<I>S,classProj=std::identity, ...
3.reference:reference to object,reference to function。 1/**//* 2(C) OOMusou 2007http://oomusou.cnblogs.com 3Filename : GenericAlgo_for_each_FunctionTemplateWithNontypeParameter.cpp 4Compiler : Visual C++ 8.0 / BCB 6.0 / gcc 3.4.2 / ISO C++ ...
3.reference:reference to object,reference to function。 1 /* 2 (C) OOMusou 2007 http://oomusou.cnblogs.com 3 Filename : GenericAlgo_for_each_FunctionTemplateWithNontypeParameter.cpp 4 Compiler : Visual C++ 8.0 / BCB 6.0 / gcc 3.4.2 / ISO C++ 5 Description : Demo how to use for_...
#include<bits/stdc++.h>usingnamespacestd;voidmyfunc(char& c){//to update reference is passedif(c =='a'|| c =='e'|| c =='i'|| c =='o'|| c =='o') c ='*'; }intmain(){stringstr ="includehelp";cout<<"Initially string is:"<< str <<endl;for_each(str.begin(), str...
代码语言:cpp 复制 #include<iostream>#include<vector>#include<algorithm>intmain(){std::vector<int>v={1,2,3,4,5};std::for_each(v.begin(),v.end(),[](int&n){n++;});for(inti:v){std::cout<<i<<" ";}return0;} 在这个例子中,std::for_each将对每个元素调用lambda函数[](int...
3.reference:reference to object,reference to function。 ?1/*? ?2(C)?OOMusou?2007? ?3Filename???:?GenericAlgo_for_each_FunctionTemplateWithNontypeParameter.cpp ?4Compiler???:?Visual?C++?8.0?/?BCB?6.0?/?gcc?3.4.2?/?ISO?C++ ?5Description?:?Demo?how?to?use?for_each?with?function?tem...
// alg_for_each.cpp // compile with: /EHsc #include <vector> #include <algorithm> #include <iostream> // The function object multiplies an element by a Factor template <class Type> class MultValue { private: Type Factor; // The value to multiply by public: // Constructor initializes ...