c++ - Difference in loading times with and without namespace -

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i'm new c++ hope question isn't dumb, plus i've searched around , couldn't find answer.

so brings my question, there difference in loading times between calling std::cout , calling cout when using namespace std added code? imagine if there difference should unnoticeable, i'd sure before turning in project.

by way, in university told using namespace std okay (i've read @ lengths on , whether practice or not not in question right now).

there no difference. , performance should last of concerns when making these kinds of "micro" code decisions.


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