id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2893,Function Input Iterator,anonymous,Dave Abrahams,"Simply put a the function input iterator implementation wraps a nullary function object and allows for bounded iterators using an embedded state variable. The use case is for something like the following:

{{{
struct generator {
 typedef int result_type;
 generator() { srand(time(0)); }
 result_type operator() () const { return rand(); }
};

using namespace std;
using namespace boost;

int main(int argc, char * argv[]) {
 generator f;
 copy(
   make_function_input_iterator(f, infinite()),
   make_function_input_iterator(f, infinite()),
   ostream_iterator<int>(cout, "" "")
   );
 return 0;
}
}}}

And if you don't want an infinite range, you can simply bound it:

{{{
copy(
  make_function_input_iterator(f, 0),
  make_function_input_iterator(f, 10),
  ostream_iterator<int>(cout, "" "")
);
}}}
",Library Submissions,closed,To Be Determined,iterator,,Not Applicable,fixed,iterator function input,mikhailberis@…