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?

Stack Overflow is garbage · Accepted Answer · 2015-10-11 16:48:01Z

3

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

answered Oct 11, 2015 at 16:48

249k53 gold badges356 silver badges558 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

As it happens, this is precisely the example given for std::transform on cppreference: en.cppreference.com/w/cpp/algorithm/transform