make_unique and perfect forwarding

Question

Why is there no std::make_unique function template in the standard C++11 library? I find

std::unique_ptr p(new SomeUs         


        

Answer 1

Inspired by the implementation by Stephan T. Lavavej, I thought it might be nice to have a make_unique that supported array extents, it's on github and I'd love to get comments on it. It allows you to do this:

// create unique_ptr to an array of 100 integers
auto a = make_unique();

// create a unique_ptr to an array of 100 integers and
// set the first three elements to 1,2,3
auto b = make_unique(1,2,3);