From: Tony De <tonydema@...>
Date: 2008-03-30T10:45:28+09:00
Subject: Re: Help on best way to gather/sort results ?

Todd Benson wrote:
> On Sat, Mar 29, 2008 at 1:55 AM, Tony De <tonydema@gmail.com> wrote:
>>
>>  Oooooooo!  We'll that makes perfect sense.  Thanks!  You know, sometimes
>>  you read your handy pickaxe or a blog somewhere, buy it slides right
>>  past you.  I appreciate the clarification.
>>
>>  tonyd
> 
> They all work.  I use #sort_by all the time for legibility, and I
> don't care that much about speed for the stuff I work on.  According
> to the docs, sort_by doesn't scale by speed for small key sets and
> large populations (that might be your case).  It does, however,
> perform better when there occurs object creation for the comparison
> test.
> 
> Todd

Thanks Jesus & Todd for your posts also.  I appreciate the education. 
Forums are great for getting real world experience on language usage and 
gotcha's.  So I do have another question on my sort.  I realize that in 
addition to the sort on the second element in each row of my array 
(sourceip) I would also like to then sort on the third element (email). 
So my current sort is:

@results.sort! {|x, y| y[1] <=> x[1]}

So this now sorts first by element[2] and then by element[3]:
new_results = @results.sort_by { |x| [x[1], x[2]] }

There are so many ways to accomplish the same result.  That dosen't 
mean, however, it's the most efficient.  Would there be a more efficient 
way to do this?  Not that this script is costing me a great deal in 
resources.  But it nice to code tight when possible.  Thanks again.

tonyd


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