From: Dan Zwell <dzwell@...>
Date: 2007-04-06T10:54:51+09:00
Subject: Re: Run some method based on some condition

Have a look at Module#const_get. I think this is what you wanted:
>> bar = Klass.const_get(foo).new
=> #<Klass::SubKlass1:0x2b5a3216e470>

Dan

Ken Mitchell wrote:
> Now I need to do something similar, but probably more difficult.
> 
> class Klass
> 
>   class SubKlass1
>      def initialize
>      end
>   end
> 
>   class SubKlass2
>     def initialize
>     end
>   end
> 
> end
> 
> foo = "SubKlass1"
> 
> bar = Klass::send(foo).new **That is wrong, because method SubKlass1
> doesn't exist in Klass::Class.  But I think you get my point.
> 
> On Fri, 2007-04-06 at 07:30 +0900, Jeremy McAnally wrote:
>> Something like this would work:
>>
>> irb(main):008:0> x = ['chop!', 'chop!', 'chop!']
>> => ["chop!", "chop!", "chop!"]
>> irb(main):009:0> y = "This is a string!!!"
>> => "This is a string!!!"
>> irb(main):010:0> x.each {|method| y.send(method)}
>> => ["chop!", "chop!", "chop!"]
>> irb(main):011:0> y
>> => "This is a string"
>>
>> The send method allows you to do what you're asking. :)
>>
>> --Jeremy
>>
>> On 4/5/07, Ken Mitchell <kmitchell@farmerswireless.com <mailto:kmitchell@farmerswireless.com>> wrote:
>> >
>> >  Say I wanted to run a method based on a condition like so:
>> >
>> >  class Klass
>> >    def initialize
>> >      a = '1st'
>> >      b = '2nd'
>> >      c = '3rd'
>> >    end
>> >
>> >    def a
>> >        a
>> >    end
>> >
>> >    def b
>> >      b
>> >    end
>> >
>> >    def c
>> >      c
>> >    end
>> >  end
>> >
>> >  ob = Klass.new
>> >  ['a','b','c'].do {|x|  ob. **here I would want to get at #a and #b and #c**
>> >
>> >  or maybe better explained like this
>> >
>> >  var = 'a'
>> >
>> >  puts ob.** ???? **
>> >
>> >  Or if you know perl
>> >  $foo = {bar => "baz"};
>> >  $baz = "bar";
>> >
>> >  puts $foo->{$baz};
>> >
>> >  ---> baz
>> >
>> >  Sorry to be so confusing.
>> >
>> >
>> >
>> >
>> >
>> >  Thanks,
>> >
>> >  Ken Mitchell
>> >  --
>> >
>> >  Farmers Wireless
>> >  Office: (256)638-4040 x 224
>> >  Mobile: (256)899-3391
>> >  Fax:    (256)638-2110
>> >  kmitchell@farmerswireless.com <mailto:kmitchell@farmerswireless.com>
>> >
>> >
>> >
>> >  CONFIDENTIALITY NOTICE: This e-mail and any attachment to it may contain
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>> > recipient, take notice that any disclosure, copying, distribution or taking
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>> >
>> >
>> >
>> >
>>
>>
> 
> 
> Thanks,
> 
> Ken Mitchell
> -- 
> 
> Farmers Wireless
> Office: (256)638-4040 x 224
> Mobile: (256)899-3391
> Fax:    (256)638-2110
> kmitchell@farmerswireless.com
> 
> 
> 
> *CONFIDENTIALITY NOTICE:* This e-mail and any attachment to it may
> contain confidential and legally privileged information. This
> information is intended only for the recipient named above. If you are
> not the intended recipient, take notice that any disclosure, copying,
> distribution or taking of any action based upon this information is
> prohibited by law. If you have received this e-mail in error, please
> return it to the sender and delete this copy from your system. Thank you.
> 
> 
>