There appears to be no benefit to your use of a for loop in that code. Standard hash population means that it isn't needed.

use strict;
use warnings;

my @ARGV = qw(-infile data_in.bin -outfile data_out.bin);

my %args = @ARGV;

print "Infile: $args{-infile}\n", "Outfile: $args{-outfile}" if ( exis
+ts $args{-infile} && exists $args{-outfile} );

[download]

works just the same. HTH.

PS. I wouldn't use @ARGV for a lexical variable name since it ordinarily has a special meaning.

In reply to Re^3: GetOpts not working: by hippo
in thread GetOpts not working: by finfan

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