std::tuple 动态赋值
时间: 2023-12-07 19:04:15 浏览: 129
要实现std::tuple的动态赋值,可以使用std::tie函数将变量的引用整合成一个tuple,并通过赋值操作符进行批量赋值。
首先,确保引入头文件#include <tuple>。
然后,定义tuple和需要赋值的变量。例如,定义一个tuple t1和三个变量i,d,s:
std::tuple<int, double, std::string> t1;
int i;
double d;
std::string s;
接下来,可以使用std::tie函数将变量的引用整合成一个tuple,并通过赋值操作符进行批量赋值。例如:
std::tie(i, d, s) = t1;
这样,tuple t1中的值会分别赋值给变量i,d,s。
最后,将变量的值输出来验证赋值是否成功。例如:
std::cout << i << " " << d << " " << s << std::endl;
这样,就可以动态赋值std::tuple了。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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