cout<<"Erased even numbers: "<<erased<<'\n';std::list<std::complex<double>>nums{{2,2},{4,2},{4,8},{4,2}};#ifdef __cpp_lib_algorithm_default_value_typestd::erase(nums,{4,2});#elsestd::erase(nums,std::complex<double>{4,2});#endifprintln("After erase {4, 2}, nums ...
#include <iostream>#include <algorithm>#include <string>intmain(){std::strings="This is an example";std::cout<<s<<'\n';s.erase(0,5);// 擦除 "This "std::cout<<s<<'\n';s.erase(std::find(s.begin(), s.end(),' '));// 擦除 ' 'std::cout<<s<<'\n';s.erase(s.find...
cout<<"擦除的偶数:"<<erased<<'\n';std::forward_list<std::complex<double>>nums{{2,2},{4,2},{4,8},{4,2}};#ifdef __cpp_lib_algorithm_default_value_typestd::erase(nums,{4,2});#elsestd::erase(nums,std::complex<double>{4,2});#endifprintln("After erase {4, 2}, nums =...
erase_if(std::unordered_map<Key, T, Hash, KeyEqual, Alloc>&c, Pred pred); (since C++20) Erases all elements that satisfy the predicatepredfromc. Equivalent to autoold_size=c.size();for(autofirst=c.begin(), last=c.end();first!=last;){if(pred(*first))first=c.erase(first);else...
voidmy_erase(auto&x){std::erase(x,x.front());} 假如我们传入一个vector类型,vector初始化为{1, 2, 3, 1, 2, 3},然后通过调用std::erase,按照正常想法,函数执行完毕之后vector应该仅仅删掉大小为1首元素。可是事实却并非如此,通过代码运行会发现容器剩下的元素是{2, 3, 1, 3},这里面究竟...
eraseErased elements and all elements after them (includingend()). push_back,emplace_backIf the vector changed capacity, all of them. If not, onlyend(). insert,emplaceIf the vector changed capacity, all of them. If not, only those at or after the insertion point (includingend()). ...
voidmy_erase(auto&x){ autotmp=x.front(); std::erase(x,tmp); } 但是既然都来写Cpp了,我们还可以追求点“洁癖”,我们很多时候并不希望有多余的拷贝,这时候右值就派上了用场。 voidmy_erase(auto&x){ usingT=std::decay_t<decltype(x.front())>; ...
cppreferencecomMaps是一种关联式容器包含“关键字begin返回指向map头部的迭代器clear删除所有元素count返回指定元素出现的次数empty如果map为空则返回trueend返回指向map末尾的迭代器equalrange返回特殊条目的迭代器对erase删除一个元素find查找一个元素getallocator返回map的配置器insert插入元素keycomp返回比较元素key的函数...
erase entfernt Zeichen (öffentliche Elementfunktion)[edit] push_back fügt ein Zeichen an das Ende an (öffentliche Elementfunktion)[edit] pop_back (C++11) Entfernt das letzte Zeichen Original: removes the last character The text has been machine-translated viaGoogle Translate. ...
#include <algorithm>#include <iostream>#include <iterator>#include <string>intmain(){std::strings="This Is An Example";std::cout<<"1) "<<s<<'\n';s.erase(7,3);// erases " An" using overload (1)std::cout<<"2) "<<s<<'\n';s.erase(std::find(s.begin(), s.end(),' ...