std::pair 是否存在类似 std::tie 的东西?
Does there exist something like std::tie for std::pair?
例如元组:
#include <tuple> // std::tuple, std::make_tuple, std::tie
int num;
char letter;
std::tuple<int,char> num_letter;
num_letter = std::make_tuple(10, 'a');
std::tie(num, letter) = num_letter; // unpack num_letter into num and letter
有没有等价于对的东西?
// ...
num_letter = std::make_pair(10, 'a');
std::pair_tie(num, letter) = num_letter;
实际上,对的代码完全相同,因为 std::tuple
有 operator =
with std::pair
as an argument。
num_letter = std::make_pair(10, 'a');
std::tie(num, letter) = num_letter;
例如元组:
#include <tuple> // std::tuple, std::make_tuple, std::tie
int num;
char letter;
std::tuple<int,char> num_letter;
num_letter = std::make_tuple(10, 'a');
std::tie(num, letter) = num_letter; // unpack num_letter into num and letter
有没有等价于对的东西?
// ...
num_letter = std::make_pair(10, 'a');
std::pair_tie(num, letter) = num_letter;
实际上,对的代码完全相同,因为 std::tuple
有 operator =
with std::pair
as an argument。
num_letter = std::make_pair(10, 'a');
std::tie(num, letter) = num_letter;