From: Carlos <angus@...>
Date: 2004-11-11T21:23:08+09:00
Subject: Re: array.each restart when array is changed

[Kevin B�rgens <kevin@boergens.de>, 2004-11-10 23.48 CET]
> How to restart a "each" iteration when the iterated array is changed? I do
> it like this
> 
> changed=false
> while (changed)
> changed=false
> array.each {|e|
>   if (today_is_christmas)
>     array=array+=["Hello santa claus"]
>     changed=true
>   end
> }

array.each do |e|
	if (today_is_christmas)
		array += ["Hello"]
		retry
	end
end

Beware of infinite loops.

> Second question:
> why is this not allowed
> 
> #show me the first n letters of the alphabet
> ('a'...'a'+gets.to_i).each{|e| puts e }
> 
> How to do it the right way?

(?a ... ?a + gets.to_i).each do |e| puts e.chr end

letter='a'; gets.to_i.times do puts letter; letter=letter.succ end

You have several possibilities.

Good luck.

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