From: Mike Moore <blowmage@...>
Date: 2011-03-05T03:43:00+09:00
Subject: Re: How to assign an element to a hash only if its value is not nil?

On Fri, Mar 4, 2011 at 10:56 AM, Colin Bartlett <colinb2r@googlemail.com> wrote:
>
> I'm not sure what that code does, but taking what the OP wanted to do
> as the starting point.
>> hash = {}
>>    hash[:key] = myvalue
>> How to assign hash[:key] only if myvalue is not nil?
>> Current solution is:
>>    hash[:key] = myvalue unless myvalue.nil?
>> Is there something more beautiful?

My assumption from the OP's question was that he wanted to populate a
new hash so that the keys's contain non-nil values. I offered a
slightly different approach to achieve the same result. (Please note I
said you "could", not "should".) My apologies for inflicting ugly or
dangerous code on you, I assumed the circumstances and tradeoffs
necessary for using (or not using) such an approach would be obvious.
My bad.