From: Alex Gutteridge <alexg@...>
Date: 2007-08-28T18:36:11+09:00
Subject: Re: ''Macro'' operator

On 28 Aug 2007, at 18:28, Damjan Rems wrote:

>
> It is probably called different in ruby, but what I want to achive is:
>
> a1=10
> r= ?('a' + '1')  # ? is whatever, r should have value 10

? is eval:

irb(main):001:0> a1 = 10
=> 10
irb(main):002:0> r = eval('a'+'1')
=> 10

There are almost always better ways of doing something than using  
eval though. If you post what you are trying to do someone may be  
able to suggest an alternative.

Alex Gutteridge

Bioinformatics Center
Kyoto University