From: James Edward Gray II <james@...>
Date: 2006-01-18T22:43:09+09:00
Subject: Re: Delayed quote expansion

On Jan 18, 2006, at 6:48 AM, Kevin Olbrich wrote:

> Lots of good responses here, but the one that turns out to be the
> easiest is...
>
> def func(param)
>   some_value = 42
>   value = eval %Q{%Q{#{param}}}
> end
>
> func('my number is #{some_value}')  #=> 'my number is 42'

What you really want here is ERB:

 >> require "erb"
=> true
 >> def expand( template )
 >>   some_value = 42
 >>   ERB.new(template).result(binding)
 >> end
=> nil
 >> expand "My number is <%= some_value %>."
=> "My number is 42."

James Edward Gray II