Hi Monks,

I have a simple program that passes a file handle as the only argument to a subroutine. <$_[0]> fails to return a line from the file. Instead, it returns something like "GLOB(0x1bcb22a0)". However, if I use another variable to store the file handle. It works!

Anyone has any idea?

#!/usr/bin/perl -w
use strict;
use warnings;
open my $FH, "/tmp/test.txt" || die "Failed to open /tmp/test.txt: $!\
+n";

## NOT WORKING !!
while (my $Line = GetLine($FH)) {
        print "$Line";
}

## NOT WORKING !!
sub GetLine {
       my $line = <$_[0]> ;
       return $line;
}

[download]

If I change the subroutine GetLine to the codes below. It works.

sub GetLine {
        my $FH = shift;
        my $line = <$FH> ;
        return $line;
}

[download]

In reply to $_[0] fails for file handle? by sophate

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