From: Eero Saynatkari <eero.saynatkari@...>
Date: 2006-09-13T01:17:56+09:00
Subject: Re: arbitrary indexes

Jason Nordwick wrote:
> There has to be an easier way to do this.
> 
> If I have v=(1..99).to_a and I want to index the 20th to 30th elements, 
> this is simply v[20,10]. But if I have a list of indexes i=[9, 11, 35, 
> 47, 48, 55, 58, 63, 92, 96] that I want, I can't seem to find a simpler 
> way than i.map{|x|v[x]} which seem like an aweful lot of syntax just for 
> what is essentially "v[i]". Is there an easier way to do this?

 array.values_at *i

> -jason
> 
> (If your answer is "in Ruby it is easy to change the way basic primitive 
> operate yourself and hose everybody else in the project", then please 
> keep it to yourself... that answer is getting a little tiresome.)

My answer is to

A) look over the documentation (ri Array, ri Array#values_at)

B) --And I mean this in the kindest way--stop thinking about how
things should be comparing to other languages and just go with the flow.

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