> > # compares lines in 2 files, shows set difference
> >
> > # call as: myprog file1 file2
> >
> > while (<>)
> > {
> > /(\S+)/ and $seen_in_file1{$1} = +1;
>
> Did you mean $seen_in_file1{$1} += 1;
>
> When you give the diamond operator it tries to open
> all you command
> line args as files one after the other. The first
> while you have above
> will finish of file1 and file2.
>
> > }
> >
> > while (<>)
>
> The second while you have here will wait on your
> standard input.
> You will have to press Control-D to proceed, in
> effect your
> only_in_file2 hash will either contain nothing or
> some input
> you give in the standard input.
>
> I think you will have to open these two files
> explicitly to
> do your difference check.
Sorry, I may sound stupid, how do I output the results
without having to do a control-D in the middle of the
program running -> how do I open these files
explicitly?
Many thanks....
Priss
__________________________________________________
Do You Yahoo!?
Everything you'll ever need on one web page
from News and Sport to Email and Music Charts
http://uk.my.yahoo.com
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
