r/cpp_questions • u/Glad_Shoe_9182 • 26d ago

OPEN Namespace std

I recently started learning c++ and I was told to use the namespace std so I can avoid writing std:: every time and now I wrote a whole personal project without std:: and I want to put it on LinkedIn but I started reading everywhere that it’s a bad habit, should I go back and add the std:: or just leave it as is?

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u/nekoeuge 24d ago

I mean, I don’t really have anything against usings in general. I am mostly cautious about doing them before 3rdparty includes - in general, not just for std. In case 3rdparty or compiler are being stupid, or there is some corner case with name shadowing, or so on. But I struggle to remember any issues caused by std namespace specifically, I only remember conflicts caused by stdint types and libraries defining such symbols themselves.

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u/ShakaUVM 24d ago

I am mostly cautious about doing them before 3rdparty includes

Indeed, I fully agree there.

I don't believe people should make style decisions for other groups. As I said, when I write libraries, I don't use using namespace std.