From: "William James" <>
Date: 2009-12-29T02:10:13+09:00
Subject: Re: creating array

David A. Black wrote:

> Hi --
> 
> On Mon, 28 Dec 2009, Haris Bogdanovi? wrote:
> 
> > Hi.
> > 
> > Is there a short way of creating array of numbers
> > with, for example, step of 10, like this:
> > 
> > 10,20,30,40,50
> > 
> > By short I mean without going through iteration loop:
> > 
> > array=[]
> > (1..5).each do |i|
> >    array.push i*10
> > end
> 
> In 1.8.6 you can do:
> 
>    array = (1..5).map {|i| i * 10 }
> 
> and in 1.9 you can do:
> 
>    10.step(50,10).to_a
> 
> I can never keep track of which side of the fence 1.8.7 falls on, but
> you can try both.
> 
> 
> David

irb(main):001:0> 10.step(50,10).to_a
=> [10, 20, 30, 40, 50]
irb(main):002:0> RUBY_VERSION
=> "1.8.7"

--