通过std::tuple_element获取元素类型。 template<typename Tuple> void Fun(Tuple& tp) { std::tuple_element<0,Tuple>::type first = std::get<0>(mytuple); std::tuple_element<1,Tuple>::type second = std::get<1>(mytuple); } 获取tuple中元素的个数: tuple t; int size = std::tuple_size...
C/C++ error C2027: 使用了未定义类型“std::tuple<SkPoint *,SkScalar *>” - C++ 中使用 std::tuple 需要包含头文件 <tuple>,如下: #include <tuple>
N3887 tuple_element_t VS 2015 N3891 Renaming shared_mutex (Timed) To shared_timed_mutex VS 2015 N3346 Minimal Container Element Requirements VS 2013 N3421 Transparent Operator Functors (less<>, etc.) VS 2013 N3655 Alias Templates For <type_traits> (decay_t, etc.) VS...
std::tuple可看做std::pair的泛化实现，std::pair包含两个元素，std::tuple 可以同时包含多个元素，...
size() << "-element list\n"; } void append(std::initializer_list<T> l) { v.insert(v.end(), l.begin(), l.end()); } std::pair<const T*, std::size_t> c_arr() const { return {&v[0], v.size()}; // 在return 语句中复制列表初始化 // 这不使用 std::initializer_list...
N3887 tuple_element_t VS 2015 N3891 Renaming shared_mutex (Timed) To shared_timed_mutex VS 2015 N3346 Minimal Container Element Requirements VS 2013 N3421 Transparent Operator Functors (less<>, etc.) VS 2013 N3655 Alias Templates For <type_traits> (decay_t, etc.) VS...
N3887 tuple_element_t VS 2015 N3891 Renaming shared_mutex (Timed) To shared_timed_mutex VS 2015 N3346 Minimal Container Element Requirements VS 2013 N3421 Transparent Operator Functors (less<>, etc.) VS 2013 N3655 Alias Templates For <type_traits> (decay_t, etc.) VS...
#include <iostream> #include <vector> #include <initializer_list> template <class T> struct S { std::vector<T> v; S(std::initializer_list<T> l) : v(l) { std::cout << "constructed with a " << l.size() << "-element list\n"; } void append(std::initializer_list<T> l) ...
编译错误 error C2451: “std::_Unforced”类型的条件表达式是非法的 2015-10-13 22:19 −part 1 编译器 vs2015 VC++。 完整的错误信息粘贴如下: d:\program files (x86)\microsoft visual studio 14.0\vc\include\algorithm(43): error C2451: “std::_... ...
将std::map移植到C语言中,需要了解C语言中没有与std::map相同的容器。但是,可以使用结构体和链表等数据结构来实现类似的功能。 首先,需要定义一个键值对的结构体,如下所示: ```c ...