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Full Discussion: perl: eval and constants
Top Forums Shell Programming and Scripting perl: eval and constants Post 60653 by zazzybob on Thursday 20th of January 2005 05:48:39 AM
Old 01-20-2005
Do you mean something like this?

Code:
#!/usr/bin/perl

@foo=('FOOD','NUMBER','OS');
@bar=('pizza','two','unix');

foreach $foo_val ( @foo ) {
  eval "\$$foo_val = @bar[$count]";
  ++$count;
}
print "\$FOOD IS $FOOD\n";
print "\$NUMBER IS $NUMBER\n";
print "\$OS IS $OS\n";

Cheers
ZB
 

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LEARN ABOUT DEBIAN

perl::critic::policy::inputoutput::requirebracedfilehandlewithpr

Perl::Critic::Policy::InputOutput::RequireBracedFileHandUsertContributed PPerl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3pm)

NAME

       Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint - Write "print {$FH} $foo, $bar;" instead of "print $FH $foo, $bar;".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       The "print" and "printf" functions have a unique syntax that supports an optional file handle argument.	Conway suggests wrapping this
       argument in braces to make it visually stand out from the other arguments.  When you put braces around any of the special package-level
       file handles like "STDOUT", "STDERR", and "DATA", you must the '*' sigil or else it won't compile under "use strict 'subs'".

	 print $FH   "Mary had a little lamb
";  #not ok
	 print {$FH} "Mary had a little lamb
";  #ok

	 print	 STDERR   $foo, $bar, $baz;  #not ok
	 print	{STDERR}  $foo, $bar, $baz;  #won't compile under 'strict'
	 print {*STDERR}  $foo, $bar, $baz;  #perfect!

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>

COPYRIGHT

       Copyright (c) 2005-2011 Imaginative Software Systems.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The full text of this license
       can be found in the LICENSE file included with this module.

perl v5.14.2							    2012-0Perl::Critic::Policy::InputOutput::RequireBracedFileHandleWithPrint(3pm)
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