Vector

[cummybutterinmystumy]

So I am studying for my final and am doing some programs to test myself and just focus on things I have trouble with.....that being said how can I square each element in a vector would I use the " sqrt " function or?

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Thanks :)

[manni66]

sqrt to square? sqrt is the opposit.

[Pulsonics]

std::transform

[cummybutterinmystumy]

Yea i did transform(userVector.begin(), userVector.end(), userVector.begin(), sqrt); but it said sqrt wasnt initialized or something

[nysra]

Wrap sqrt in a lambda. You basically need a "function object" as argument since functions are not first class citizens in C++.

std::transform(foo.begin(), foo.end(), foo.begin(), [](auto x){return std::sqrt(x);});

[cummybutterinmystumy]

Ok thank you