Re: how to pass operators as arguments to a sub


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Re: how to pass operators as arguments to a sub

by borisz (Canon)

on May 03, 2006 at 09:45 UTC ( [id://547096]=note: print w/replies, xml )

Need Help??

in reply to how to pass operators as arguments to a sub

Here is a template without eval.

use warnings;
use strict;

my %h = (
          -r => sub { -r shift },
          -w => sub { -w shift },
);

my $testDir = '/tmp/';

checkDir( $testDir, '-w' );
checkDir( $testDir, '-r' );

sub checkDir {
  my ( $dir, $perm ) = @_;
  die '???' unless exists $h{$perm};
  if ( $h{$perm}($dir) ) {
    print "Can $perm $dir\n";
  }
  else {
    print "Can not $perm $dir\n";
  }
}
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Boris