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Groups > comp.lang.ruby > #3636

Re: Initialize Struct from Hash

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"Jesús Gabriel y Galán" <jgabrielygalan@gmail.com> wrote in post 
#995567:
> On Thu, Apr 28, 2011 at 7:00 PM, Brian Candler <b.candler@pobox.com>
> wrote:
>>  self
>> (I'm talking about real Struct here, not OpenStruct etc)
> ruby-1.8.7-p334 :001 > K = Struct.new :id,:timestamp
>  => K
> ruby-1.8.7-p334 :002 > K[3,8]
>  => #<struct K id=3, timestamp=8>
>
> Jesus.

Is there a hash anywhere in your code? How about this:


K1 = Struct.new :foo, :bar

class MyClass < K1
  def initialize(hash)
    super(*hash.values_at(:foo, :bar) )
  end
end

puts MyClass.new(bar: 456, foo: 123)


(stolen from: 
http://stackoverflow.com/questions/2680523/dry-ruby-initialization-with-hash-argument)

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Initialize Struct from Hash Brian Candler <b.candler@pobox.com> - 2011-04-28 12:00 -0500
  Re: Initialize Struct from Hash Jesús Gabriel y Galán <jgabrielygalan@gmail.com> - 2011-04-28 12:05 -0500
    Re: Initialize Struct from Hash Jesús Gabriel y Galán <jgabrielygalan@gmail.com> - 2011-04-28 12:10 -0500
    Re: Initialize Struct from Hash 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-28 12:16 -0500
      Re: Initialize Struct from Hash Jesús Gabriel y Galán <jgabrielygalan@gmail.com> - 2011-04-28 12:19 -0500
  Re: Initialize Struct from Hash Brian Candler <b.candler@pobox.com> - 2011-04-28 15:24 -0500
    Re: Initialize Struct from Hash Joel VanderWerf <joelvanderwerf@gmail.com> - 2011-04-28 15:50 -0500
      Re: Initialize Struct from Hash Robert Klemme <shortcutter@googlemail.com> - 2011-04-29 03:06 -0500
        Re: Initialize Struct from Hash Joel VanderWerf <joelvanderwerf@gmail.com> - 2011-04-29 10:27 -0500
      Re: Initialize Struct from Hash Brian Candler <b.candler@pobox.com> - 2011-04-29 03:22 -0500

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