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Copy pathalias.cpp
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20 lines (15 loc) · 570 Bytes
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//
// Created by light on 19-11-3.
//
#include<vector>
usingnamespacestd;
// 不可以对alias template做偏特化或全特化
template<typename T>
using Vec=vector<T, allocator<T>>; // alias template using新用法
//# define Vec<T> template<typename T> vector<T, allocator<T>> // 使用宏不行
intmain() {
Vec<int> col;
// 如果使用宏上述会被替换为template<typename int> vector<int, allocator<int>> error 不是我们想要的
// typedef vector<int, allocator<int>> Vec; // typedef也无法做到,没法指定模板参数
return0;
}