[C++] to_array

개요

• array를 생성

예제

• 코드

   #include <array>
   #include <cstring>
   #include <iostream>
   #include <string>
   #include <string_view>
      
   using namespace std;
      
   template <typename T> constexpr string_view type_name() {
   	const string s = __PRETTY_FUNCTION__;
   	const int prefixSize = s.find("[with T = ") + strlen("[with T = ");
      
   	return string_view(s.data() + prefixSize, s.find(';') - prefixSize);
   }
      
   int main() {
   	auto print = [](auto a) {
   		cout << type_name<decltype(a)>() << endl;
      
   		for (const auto &iter : a) {
   			cout << iter << " ";
   		}
   		cout << endl;
   	};
      
   	print(to_array("abc"));
      
   	cout << "------" << endl;
      
   	print(to_array({1, 2, 3}));
      
   	cout << "------" << endl;
      
   	print(to_array<double>({1, 2, 3}));
      
   	return 0;
   }
  

• 실행 결과

   std::array<char, 4>
   a b c
   ------
   std::array<int, 3>
   1 2 3
   ------
   std::array<double, 3>
   1 2 3