From: Peter Vandenabeele <peter@...>
Date: 2012-01-23T03:10:23+09:00
Subject: Re: codepart - please explain!

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On Sun, Jan 22, 2012 at 6:54 PM, Blub Bla <susannepiehl@hotmail.com> wrote:

> Hey everyone,
>
> I've found a code part that I don't understand:
>
>
>
> def runCode
>  return <<STARTCODE
>  (..)
>  STARTCODE
> end
>
>
> Unfortunately the google search doesn't work because the << will be
> ignored.
> Could you explain what it's doing?
>
> Oh, and I can't try out what it's doing because I'll get the error that
> STARTCODE can't be found until EOF...
>

The technique is called a "here doc".

First match in Google

 http://blog.jayfields.com/2006/12/ruby-multiline-strings-here-doc-or.html

The specific issue in your code example is that you need to use either:

def runCode
 return <<STARTCODE
 (..)
STARTCODE  # NO margin left of STARTCODE
end

or:

def runCode
 return <<-STARTCODE
 (..)
 STARTCODE
end

If you had access to  an editor with built-in coloring,
these types of problems become immediately obvious
(like e.g. vim and many others).

HTH,

Peter


>
> Thx
>
> --
> Posted via http://www.ruby-forum.com/.
>
>


-- 
Peter Vandenabeele
http://twitter.com/peter_v
http://rails.vandenabeele.com
gsm: +32-478-27.40.69
e-mail: peter@vandenabeele.com

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