Created
December 2, 2016 12:32
-
-
Save LusainKim/e69da8975d0394b195cacc6133c58c20 to your computer and use it in GitHub Desktop.
Build Array
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#include <iostream> | |
#include <array> | |
using namespace std; | |
template<typename Ty, typename... Args> | |
constexpr auto BuildArray(Args&&... args) noexcept { return array<Ty, sizeof...(args)>{ args... }; } | |
template <typename Ty, size_t N> using TyArr = Ty[N]; | |
// 들어갈 수 있는지 확인하는 용도 | |
void foo(int* arr) {} | |
int main() | |
{ | |
foo(BuildArray<int>(1, 2, 3, 4).data()); | |
foo(TyArr<int, 4>{ 1, 2, 3, 4 }); | |
// error: 균일 초기화로 만든 배열과 포인터는 묵시적 형변환이 되지 않는다. | |
// foo({ 1,2,3,4 }); | |
for (auto& p : BuildArray<int>(1, 2, 3, 4)) cout << p << " " << endl; | |
for (auto& p : TyArr<int, 4>{ 1, 2, 3, 4 }) cout << p << " " << endl; | |
for (auto& p : { 1, 2, 3, 4 }) cout << p << " " << endl; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment