From: Brian Candler <b.candler@...>
Date: 2011-01-27T16:13:31+09:00
Subject: Re: Enumerable.inject_with_index?

Colin Bartlett wrote in post #977259:
> I'm curious as to when and why people use each_with_index and/or
> inject, etc, instead of a somewhat less elegant, and admittedly
> possibly less flexible, more direct approach.

I think you answered it yourself: people will generally choose the more 
elegant and/or clearer solution (by their own assessment of 'clearer').

Unless this is the innermost loop of a program which processes a large 
dataset, and you've used a profiler to prove that this is the hotspot in 
your particular application, the performance difference doesn't matter a 
hoot.

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