How to read arbitrary number of values using std::copy?
- by Miro Kropacek
Hi,
I'm trying to code opposite action to this:
std::ostream outs; // properly initialized of course
std::set<int> my_set; // ditto
outs << my_set.size();
std::copy( my_set.begin(), my_set.end(), std::ostream_iterator<int>( outs ) );
it should be something like this:
std::istream ins;
std::set<int>::size_type size;
ins >> size;
std::copy( std::istream_iterator<int>( ins ), std::istream_iterator<int>( ins ) ???, std::inserter( my_set, my_set.end() ) );
But I'm stuck with the 'end' iterator -- input interators can't use std::advance and neither I can use two streams with the same source...
Is there any elegant way how to solve this? Of course I can use for loop, but maybe there's something nicer :)
