From: Jeff Storey <lists@...>
Date: 2012-06-28T22:36:34+09:00
Subject: Confusion about aliasing eql? and ==

I'm new to ruby and have some confusion about the eql? and == methods. I
understand that eql? compares value and type, while == just compares
values, but the ruby documentation states:

For objects of class Object, eql? is synonymous with ==. Subclasses
normally continue this tradition, but there are exceptions.

It does not seem like this is the implemented behavior of Object, but
rather a suggestion. The object.c source code for ruby states
Subclasses normally continue this tradition by aliasing
<code>eql?</code> to their overridden <code>==</code> method, but there
are exceptions

So my question is - is it typical to just alias :eql? :== in classes
when overriding == and have == check both type and value? If this is the
common case, I would think there is an easier way to do this rather than
adding an alias to every file where you override ==.

Thanks,
Jeff

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