Steven Haryanto > Object-BlankStr > Object::BlankStr

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Module Version: 0.05   Source  

NAME ^

Object::BlankStr - Object which stringifies to empty string ("")

VERSION ^

version 0.05

SYNOPSIS ^

 use Object::BlankStr;

 die Object::BlankStr->new; # dies without printing anything

 # checking exception the right way
 eval { die rand() > 0.5 ? Object::BlankStr->new : "blurg" };
 my $eval_err = $@;
 if ($eval_err || ref($eval_err)) {
    ...
 }

 # checking exception the WRONG way, object is stringified to "" and becomes
 # false
 eval { die rand() > 0.5 ? Object::BlankStr->new : "blurg" };
 if ($@) {
    ...
 }

DESCRIPTION ^

Object::BlankStr is just an empty object which stringifies to "" (empty string). Since it is an object, it has a boolean true value (but be careful with stringification, see SYNOPSIS).

So far the only case I've found this to be useful is for die()-ing without printing anything. If you just use 'die;' or 'die "";' Perl will print the default "Died at ..." message. But if you say 'die Object::BlankStr->new;' Perl will die without printing anything.

SEE ALSO ^

Object::NulStr

Object::SpaceBackStr

AUTHOR ^

Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2013 by Steven Haryanto.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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