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From: Amir Ebrahimifard on 6 Aug 2010 12:23
Hi
In this code :
-------------------------------

def test_method(name)
puts name
3+5
end


return_value = test_method("James")
puts return_value
-------------------------------

why when the last statement executed , "puts" does not return "nil" and
return 8?
--
Posted via http://www.ruby-forum.com/.

From: Matthew Bloch on 6 Aug 2010 12:27
On 06/08/2010 17:23, Amir Ebrahimifard wrote:
> Hi
> In this code :
> -------------------------------
>
> def test_method(name)
> puts name
> 3+5
> end
>
>
> return_value = test_method("James")
> puts return_value
> -------------------------------
>
> why when the last statement executed , "puts" does not return "nil" and
> return 8?

Because in Ruby, the last statement executed in a block is the block's
value. That goes for your test_method's return value, and any other
type of block you use.

--
Matthew Bloch

From: Rob Biedenharn on 6 Aug 2010 14:17

On Aug 6, 2010, at 12:27 PM, Matthew Bloch wrote:

> On 06/08/2010 17:23, Amir Ebrahimifard wrote:
>> Hi
>> In this code :
>> -------------------------------
>>
>> def test_method(name)
>> puts name
>> 3+5
>> end
>>
>>
>> return_value = test_method("James")
>> puts return_value
>> -------------------------------
>>
>> why when the last statement executed , "puts" does not return "nil"
>> and
>> return 8?
>
> Because in Ruby, the last statement executed in a block is the
> block's value. That goes for your test_method's return value, and
> any other type of block you use.
>
> --
> Matthew Bloch
>


Actually, 3+5 is the last statement in your test_method. Are you
surprised that the value is 8?

-Rob

Rob Biedenharn
Rob(a)AgileConsultingLLC.com http://AgileConsultingLLC.com/
rab(a)GaslightSoftware.com http://GaslightSoftware.com/


From: brabuhr on 6 Aug 2010 15:49
On Fri, Aug 6, 2010 at 12:23 PM, Amir Ebrahimifard <amiref(a)ymail.com> wrote:
> def test_method(name)
>  puts name
>  3+5
> end
>
>
> return_value = test_method("James")
> puts return_value
> -------------------------------
>
> why when the last statement executed , "puts" does not return "nil" and
> return 8?

irb(main):001:0> def test_method(name)
irb(main):002:1> rv = puts(name)
irb(main):003:1> 3+5
irb(main):004:1> rv
irb(main):005:1> end
=> nil
irb(main):006:0> return_value = test_method("James")
James
=> nil
irb(main):007:0> puts return_value
nil
=> nil

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