From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2009-12-02T00:55:09+09:00
Subject: Re: How to use "eval" to create method parameters?

On Tue, Dec 1, 2009 at 1:31 PM, Iñaki Baz Castillo <ibc@aliax.net> wrote:
> El Martes, 1 de Diciembre de 2009, Jan Friedrich escribió:
>> Why not use a plain old Array?
>>
>> lalalala = false
>> if lalalala
>>   params = [:user, 'alice', 1456]
>> else
>>   params = [:user, 0000]
>> end
>>
>> my_object.my_method(*params)
>
> Yes! I missed that!

If you do have a string with comma-separated values, you can do this
(a little hackish, though):

irb(main):001:0> a = ":user, 'alice'"
=> ":user, 'alice'"
irb(main):011:0> def m *params
irb(main):012:1> p params
irb(main):013:1> end
=> nil
irb(main):014:0> args = eval("[#{a}]")
=> [:user, "alice"]
irb(main):015:0> m *args
[:user, "alice"]
=> nil

Jesus.