Is there a sugar syntax for usings in CPP? Like using std::{name1, name2, ..., nameN}?-CodePudding

Let's say I want to use

#include <iostream>

using std::cout;
using std::cin;
using std::endl;

But I don't want to use

using namespace std;

Is there something like this:

using std::{cout, cin, endl};

I've tried

using std::{cout, cin, endl};

Instead I got a syntax error.

CodePudding user response：

As of c 17, you can add multiple objects in using separated by a comma.

using std::vector, std::cout, std::cin;

Previously it required a separate using statement for each. See the using declaration . You do have to include the full path for each declaration.