From: "F. Senault" <fred@...>
Date: 2007-07-24T07:35:02+09:00
Subject: Re: Variable Generation

Le 23 juillet 2007 � 23:19, Ari Brown a �crit :

> My current method (which FAILS) is using eval
> array.each {|item| eval(item + "=\"#{item}\"") }

When the eval is run, you're in the context of the block.  If the
variable exists beforehand, you can use it.  Otherwise, I don't know if
it can be done.

You can try to make an accessor method, though :

[ 'a', 'b', 'c' ].each do |t| eval <<-EOE
    def #{t}
      '#{t}'
    end
  EOE
end
puts a
puts b

On the other hand, you can always use instance variables, with the
following code for instance :

[ 'a', 'b', 'c' ].each do |t| 
  self.instance_variable_set("@#{t}".to_sym, t)
end
puts @a
puts @b

In some contexts, I guess you could also call attr_accessor to generate
the accessors, but I can't wrap my mind around it at this hour...  :)

Fred
-- 
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