From: Keith Bennett <keithrbennett@...>
Date: 2011-08-01T03:48:23+09:00
Subject: Re: send() docs are wrong

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My two cents...I think something like this would be preferable:

obj1.send(symbol [, args...]) =E2=86=92 obj2

...or even better...

obj.send(instance_method_name_as_symbol [, args...]) =E2=86=92 =
instance_method_return_value

I agree that use of 'obj' for both is ambiguous, and think it's =
important for documentation to be more precise than that.

- Keith

---
Keith R. Bennett
Senior Software Consultant
Business: http://www.bbsinc.biz
Linked In: http://www.linkedin.com/in/keithrbennett
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On Jul 31, 2011, at 2:00 PM, Chris White wrote:

>=20
> On Jul 31, 2011, at 10:51 AM, 7stud -- wrote:
>=20
>> obj.send(symbol [, args...]) =E2=86=92 obj
>> obj.__send__(symbol [, args...]) =E2=86=92 obj
>>=20
>> Somehow, I don't expect the return value of send() to be the =
receiver.
>> Let's test send()'s return value using the example provided:
>>=20
>> class Klass
>>    def hello(*args)
>>      "Hello " + args.join(' ')
>>    end
>> end
>>=20
>> k =3D Klass.new
>> x =3D k.send :hello, "gentle", "readers"
>>=20
>> puts x.class
>>=20
>> --output:--
>> String
>>=20
>> According to the docs, the return value of send() should be k, the
>> receiver, and k.class would therefore output: Klass.
>=20
> Potentially misleading yes, incorrect no. If you call send on an =
object you get an object back. It may be the same object, it may be =
another object. You could say=20
>=20
> obj.send(symbol [, args...]) =E2=86=92 otherobj
>=20
> Which would work for your case, but not if the object itself was =
returned. Take for example:
>=20
> class Klass
> 	def test
> 	  self
>  end
> end
>=20
> k =3D Klass.new
> puts (k.send :test).class
>=20
> --output:--
> Klass
>=20
> Regards,
> Chris White
> Twitter: http://www.twitter.com/cwgem


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