How to copy a certain number of chars from a file to a vector the STL-way?

Question

If I want to copy the contents of a file to a vector, I can do it like that:

std::ifstream file(\"path_to_file\");
std::vector buffer(std::istrea         


        

Answer 1

Credit due to @sbi, I forgot about generate_n.

The streambuf inside file has a function snextc which returns the next character, qualifying it as a generator function, once its implicit this argument is bound.

generate_n( back_inserter( buffer ), 42,
            tr1::bind( tr1::mem_fn( &streambuf::snextc ), file.rdbuf() ) );

For vector, just read directly. This is good for deque or whatever.