Re: [boost] [range][iterator] contiguous iterators

19 Mar 2013


      Am 19.03.2013 15:23, schrieb Stefan Strasser:
...
even copy() could benefit from this, e.g.:
copy(Range const &r,OutputIterator out){
     copy(r,out,category of out);
}
copy(Range const &r,OutputIterator out,range_output_iterator_tag){
     *out=r;
}
"out" can now copy the whole range at once, using vector.reserve(). or
sputn() it into a file without buffering. or whetever else.
(for that, it needs is_contiguous<>)
note that, although copy() doesnt, the algorithm might output multiple 
ranges, or a mix between ranges and values. so you can't just pass the 
input range to whatever you want to do.

simple example:

load(OutputIterator out){
    char buffer[N];
    do{
        file.load(buffer,N);
        *out=buffer;
    }while(!file.eof());
}