From: Grary Stimon <grary.stimon@...>
Date: 2010-10-27T01:48:07+09:00
Subject: Re: error handling: two flavors?

Robert,

Yes, my method would be like find, except I envisioned using a special 
class of error to account for the case that #find cannot get the 
'finder', which, itself, could report nil in the case that the object 
sought did not exist. my thinking was that the finder might well not be 
available, so that case was not truly 'exceptional', whereas if the 
finder were available, but maybe improperly initialized, then that would 
be exceptional, etc. my special class of error would save me from 
multiple return values, e.g., [nil, nil].

I guess I can capture my meaning by defining a error specific to my 
concern.

I was just puzzled, because I thought I read (not at 
http://ruby-doc.org/docs/ProgrammingRuby/html/tut_...) that this had a 
special approach associated with it (one different, say, from Java).

Thanks,

Grar

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