NAME

Rubyish::Syntax::nil - Gives you a nil object.

SYNOPSIS

use Rubyish::Syntax::nil;

my $a = nil;

# Methods of nil
my $empty_array  = nil->to_a;
my $empty_string = nil->to_s;
my $zero   = nil->to_i;
my $zero_f = nil->to_f;

DESCRIPTION

This module exports a nil bareword that works almost like Ruby nil. It represents the singleton object of Rubyish::NilClass. It means false under boolean context, 0 when being numerified, "" when stringified, [] when converted to an array.

It also keep the behaviour that nil always referes to the same, singleton object whenever it's used in the program.

METHODS

The nil object has following instance methods:

nil

Always returns a true value.

to_a

Always returns an empty Rubyish::Array.

to_f

Always returns 0.0.

to_i

Always returns 0.

to_s

Always returns an empty Rubyish::String.

SEE ALSO

Rubyish::NilClass for the implementation of these methods.

AUTHOR

Kang-min Liu <gugod@gugod.org>, shelling shelling@cpan.org

LICENCE AND COPYRIGHT

Copyright (c) 2008,2009, Kang-min Liu <gugod@gugod.org>.

This is free software, licensed under:

The MIT (X11) License

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

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