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<h1>notcopyable.rb</h1>
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<td><strong>Path:</strong></td>
<td>lib/carat/notcopyable.rb
</td>
</tr>
<tr class="top-aligned-row">
<td><strong>Last Update:</strong></td>
<td>Mon Apr 11 12:12:50 EDT 2005</td>
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<h1><a href="../../../classes/NotCopyable.html">NotCopyable</a></h1>
<p>
Disable copying via dup and clone (and copy).
</p>
<h2>Usage</h2>
<pre>
require 'carat/notcopyable.rb'
Class FixedString < String
include NotCopyable
end
s = FixedString.new("Don't tred on me!")
puts s
s2 = s.dup
</pre>
<p>
produces
</p>
<pre>
Don't tred on me!
TypeError, "Object not copyable"
</pre>
<h2>Todo</h2>
<ul>
<li>If one is reopening a class and including this, it will not work if the
class defined dub, clone or copy (and deep_copy) itself. It only work if
it’s ancestors are responsible for those methods. How to fix?
</li>
</ul>
<h2>Notes</h2>
<ul>
<li>I don’t think this will prove very useful, but just in case here it
is.
</li>
</ul>
<h2>Author(s)</h2>
<ul>
<li>Paul Brannan <paul at atdesk.com>
</li>
<li>Thomas Sawyer
</li>
</ul>
<h2>Legal</h2>
<p>
Adapted from Ruby Treasures 0.4 Copyright (C) 2002 Paul Brannan
<paul@atdesk.com>
</p>
<p>
You may distribute this software under the same terms as Ruby (see the file
COPYING that was distributed with this library).
</p>
<h2>History</h2>
<ul>
<li>2005.04.11 Passed basic test.
</li>
</ul>
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