Maybe this is more of a meditation than a SoPW-question. In fact I know "How TDI", but I'm curious as to know which strategy people would prefer, all in all.

Basically I have this small sized script which accepts a list of filenames on the cmd line. The first file should be processed differently from the other ones (which as usual may be substituted by STDIN).

One obvious approach could be 

#!/usr/bin/perl

use strict;
use warnings;

die "Usage: $0 <file> [<files>]\n" unless @ARGV;

open my $fh, '<', shift or die $!;

while (<$fh>) {
    # ...
}

while (<>) {
    # ...
}

__END__

[download]
But I'm keen on iterating on ARGV and I was thinking of 
while (<>) {
    # ...
    last if eof(ARGV);
}

while (<>) {
    # ...
}

[download]
too. (Of course the latter has the disadvantage of doing an additional check at each iteration.)

Now it would be nice if there was an ARGV variant allowing one to iterate on the FH associated to the current $ARGV only, but since there is none available AFAIK, how would you do it?

In reply to How would you do it? Re ARGV, fundamentally! by blazar

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