std::string ::toupper on the input string

Question

Can I perform a ::toupper transformation on the same string that is the input?

i.e.:

std::transform(s.begin(), s.end(), s.begin(), ::toupper);

or do I need a different target?

score 3 · Accepted Answer · answered Oct 11 '15 at 16:48

3

Yes. That's legal, and perfectly idiomatic. It's a very common way to do it.

answered Oct 11 '15 at 16:48

jalf

2

As it happens, this is precisely the example given for `std::transform` on cppreference: http://en.cppreference.com/w/cpp/algorithm/transform – WhiteViking Oct 11 '15 at 16:49

1 Answers1