给定
#include <utility>
template <typename T1, typename T2, typename T3>
void foo(std::initializer_list<std::pair<T1, T2>> _a, std::initializer_list<T3> _b) {
/* ... */
}
int main() {
foo({{1,2},{3,4}},{1,2,3,4,5});
}
为什么 gcc 4.6 会产生错误
error: no matching function for call to ‘foo(<brace-enclosed initializer list>, <brace-enclosed initializer list>)'
note: candidate is
note: template<class T1, class T2, class T3> void foo(std::initializer_list<std::pair<T1, T2> >, std::initializer_list<T3>)
立即更新 适用于
template <typename T1, typename T2>
std::pair<T1, T2> p(const T1& _1, const T2& _2) {
return std::make_pair(_1, _2);
}
被添加并{{1,2},{3,4}}
替换为{p(1,2), p(3,4)}
。