From: Xiong Chiamiov <xiong.chiamiov+ruby_forum@...>
Date: 2008-09-12T07:07:35+09:00
Subject: Re: pass by reference in each loop

Robert Klemme wrote:
> On 11.09.2008 23:12, Xiong Chiamiov wrote:
> 
>> Robert's solution would allow me to only write the function name once, 
>> but the variables I'd still have to type twice, and I really like DRY.
>> 
>> My first thought was to store a list of all those variables in an array 
>> and loop through them, as it's then very easy to add an additional 
>> variable.  Perhaps I'm approaching this the complete wrong way, though?
> 
> That's quite near to what I suggested: just drop all the @a, @b etc. and
> stuff everything in an array - or have multiple arrays, one per class of
> data (i.e. data which undergoes wml and data which does not).  Anyway,
> chances are that you'll be able to find an elegant solution without
> needing to change the language.
> 
> Kind regards
> 
>   robert

I don't think I understood what you were suggesting the first time.  If 
I understand what you're suggesting, it is to have the values themselves 
in the array, rather than variables pointing *to* those values, yes?

I need to know specifically which values are which, however, as they get 
passed back into different parts of the output, so I'm thinking I'd have 
to use a hash, something like

hash = {
'a'  => 'this is actually input',
'b'  => 'not hardcoded',
...
}

so that I could assign them appropriately afterwards:

hash.each {|key, value| key = value}

although, looking at that now, I don't think that it would work.

But as far as hash mapping (if that's what I have to do), I suppose I 
could use one of the methods in this thread 
(http://www.nabble.com/Iterating-through-a-hash-td19074540.html), right?

I appreciate your help.
-- 
Posted via http://www.ruby-forum.com/.