From: LAMBEAU Bernard <blambeau@...>
Date: 2010-12-07T21:39:52+09:00
Subject: Re: How to delay "string" interpretation?

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To my knowledge, you won't be able to do it in a
straightforward way.

Maybe consolidating the following code would do the job...


class ActiveString

  def initialize(pattern, binding)
    @pattern = pattern
    @binding = binding
  end

  def to_s
    Kernel.eval '"' + @pattern + '"', @binding
  end

end

a, b = "a", "b"
str = ActiveString.new('#{a} + #{b}', Kernel.binding)
puts str.to_s
a, b = "a2", "b2"
puts str.to_s

Hope it helps,
B

On Tue, Dec 7, 2010 at 1:11 PM, Fritz Trapper <ajfrenzel@web.de> wrote:

> Suppose the following code:
>
>   t='#{a} + #{b}'
>   ...
>   a='a';b='b'
>
> How to cause ruby to interpret t as a "string" to get the result string
> "a + b"?
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

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