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POWhat's the best way to assign a method body at construction time when using Moose?
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  1. POWhat's the best way to assign a method body at construction time when using Moose?
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    copied!<p>I'm using <code>Moose</code> (specifically <code>MooseX::Declare</code>) to create an iterator object, <code>Iter</code> which has a <code>next</code> method that advances state and returns <code>0</code> or <code>1</code> as required for use in a <code>while</code> statement. The problem I'm running into is that depending on the existence of one of the construction parameters, <code>next</code> needs to perform two very different sets of operations. The way I see it I have five options:</p> <ol> <li>if ... then in <code>next</code> method </li> <li>subclass</li> <li>hash dispatch</li> <li>symbol table manipulation</li> <li>put methods in different modules and load required one at construction time</li> </ol> <p><strong>Number 1</strong> is just amateur.</p> <p><strong>Number 2</strong> is, I suppose, the proper OOP way of doing things. I have no objections to doing it that way but seems a little bit overkill simply to override a single method. </p> <p>I've often used <strong>Number 3</strong> in the past when working procedurally or pseudo-functionally and it's what I'm doing now.</p> <p><strong>Number 4</strong> is, as we all know, fraught with peril and I know nothing about Moose Guts to want to start messing around when unnecessary.</p> <p>The last item, <strong>number 5</strong> seems to me to be the most sensible (and Perlish) but like Number 2, is a little too much work. I'm really wondering if there's a fifth way I haven't considered such as hooking into the metaclass or perhaps a <code>MooseX</code> module that is reasonably mature.</p>
 

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