From: dblack@...
Date: 2006-09-11T02:51:59+09:00
Subject: Re: patching strings together to make a variable

Hi --

On Mon, 11 Sep 2006, Mike Dvorkin wrote:

> How about:
>
> puts "#{eval('$' + 'var' + (if $a == true then "iable" end))}"
> # => pass

If your if fails you end up adding nil to a string, which will give
you an error.

So.....

   puts eval('$' + 'var' + ($a ? "iable" : ""))

or something.


David

> Mike Dvorkin
> http://www.rubywizards.com
>
>
>
> On Sep 10, 2006, at 6:50 AM, Sy Ali wrote:
>
>> $a = true
>> $var = "fail"
>> $variable = "pass"
>> 
>> puts "#{$var(if $a == true then "iable" end)}"
>> 
>> since $a == true, I would like this to become:
>> puts "#{$variable}"
>
>

-- 
                   David A. Black | dblack@wobblini.net
Author of "Ruby for Rails"   [1] | Ruby/Rails training & consultancy [3]
DABlog (DAB's Weblog)        [2] | Co-director, Ruby Central, Inc.   [4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org