From: Stefano Crocco <stefano.crocco@...>
Date: 2011-08-31T20:06:51+09:00
Subject: Re: Prepend a character to a string in ruby

On Wednesday 31 August 2011 20:00:40 ruby rails wrote:
> Hi,
> 
> I am trying to insert a character to a string at the beginning of a
> string. How is it possible in ruby.
> I tried using
>     s.times do |s|
>     @space_availability+="0"
>       end
> But this would add at the end of the string.
> The @space_availability is a string with 1's and 0's. I need to add 0's
> at the beginning of this string.
> I am a newbie in ruby

@space_availlability.insert 0, "0"

You can find documentation for a class or method using the ri command line 
tool:

ri String

or

ri String#insert

I hope this helps

Stefano