so shift physically removes the entry in @ARGV? this is interesting and i did not realize that
Indeed it does:
$ cat shifter.pl
#!/usr/bin/env perl
use strict;
use warnings;
do {
print "ARGV is @ARGV\n";
print "Shifting " . shift . " off ...\n";
} until $#ARGV < 0;
$ ./shifter.pl x y z
ARGV is x y z
Shifting x off ...
ARGV is y z
Shifting y off ...
ARGV is z
Shifting z off ...
$
See perldoc -f shift for more.
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