On Monday, June 3, 2002, at 09:27 AM, Jeff 'japhy' Pinyan wrote:
> On Jun 3, Balint, Jess said:
>
>> Hello all. I am working on my script, and I would like to be able to use
>> STDIN as a filehandle input unless a filename is specified. I have used
>> the
>> getopt for the filename, let's say $opt_f.
>
> I would use the magic of @ARGV and <>, and do this:
>
> @ARGV = "< $filename" if $opt_f;
> while (<>) {
> # do something with $_
> }
why '<' ? isn't '$filename' enough for get '<>' to open and read from that
file?
> <> reads from the filenames listed in @ARGV, and if @ARGV is empty (which
> I'm assuming it would be) then <> reads from STDIN.
>
> Another approach:
>
> if ($opt_f) {
> open INPUT, "< $filename" or die "can't read $filename: $!";
> }
> else {
> *INPUT = *STDIN; # like what you were trying
> }
>
> --
> Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
> RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
> ** Look for "Regular Expressions in Perl" published by Manning, in 2002 *
> *
> <stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
> [ I'm looking for programming work. If you like my work, let me know.
> ]
>
>
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