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hey guys the following line of code is producing a "undefined method
`+':

@plays += 1


cheers,

Danny

--
Posted via http://www.ruby-forum.com/.

What is the content of @plays?

Sam


On 18/02/11 17:01, Danny L. wrote:
> hey guys the following line of code is producing a "undefined method
> `+':
>
> @plays += 1
>
>
> cheers,
>
> Danny
>
>

Is it an "undefined method '+' on NilClass"? If so, you forgot to
assign a value to @plays before incrementing it. You might try
something like this instead:

def plays
@plays ||=3D 0
end

def plays=3D(v)
@plays =3D self.plays + 1
end

~ jf
--
John Feminella
Principal Consultant, BitsBuilder
LI: http://www.linkedin.com/in/johnxf
SO: http://stackoverflow.com/users/75170/



On Thu, Feb 17, 2011 at 23:04, Sam Duncan <> wrote:
> What is the content of @plays?
>
> Sam
>
>
> On 18/02/11 17:01, Danny L. wrote:
>>
>> hey guys the following line of code is producing a "undefined method
>> `+':
>>
>> =C2=A0@plays +=3D 1
>>
>>
>> cheers,
>>
>> Danny
>>
>>
>
>

On Feb 18, 2011, at 7:57 AM, John Feminella wrote:

> Is it an "undefined method '+' on NilClass"? If so, you forgot to
> assign a value to @plays before incrementing it. You might try
> something like this instead:
>
> def plays
> @plays ||= 0
> end
>
> def plays=(v)
> @plays = self.plays + 1
> end
>
> ~ jf
> --
> John Feminella
> Principal Consultant, BitsBuilder
> LI: http://www.linkedin.com/in/johnxf
> SO: http://stackoverflow.com/users/75170/

I think you'd want:

def plays=(v)
@plays = v
end

In your original:

plays = 5
puts plays
1 # <== ???

I can't imagine that's what the OP wants to see.



>
>
>
> On Thu, Feb 17, 2011 at 23:04, Sam Duncan <>
> wrote:
>> What is the content of @plays?
>>
>> Sam
>>
>>
>> On 18/02/11 17:01, Danny L. wrote:
>>>
>>> hey guys the following line of code is producing a "undefined method
>>> `+':
>>>
>>> @plays += 1
>>>
>>>
>>> cheers,
>>>
>>> Danny
>>>
>>>
>>
>>
>

Rob Biedenharn
http://AgileConsultingLLC.com/
http://GaslightSoftware.com/

Whoops, that's what I get for copy-pasting into the wrong segment. You
are correct, Rob.

~ jf
--
John Feminella
Principal Consultant, BitsBuilder
LI: http://www.linkedin.com/in/johnxf
SO: http://stackoverflow.com/users/75170/



On Fri, Feb 18, 2011 at 10:29, Rob Biedenharn
<> wrote:
> On Feb 18, 2011, at 7:57 AM, John Feminella wrote:
>
>> Is it an "undefined method '+' on NilClass"? If so, you forgot to
>> assign a value to @plays before incrementing it. You might try
>> something like this instead:
>>
>> def plays
>> =C2=A0@plays ||=3D 0
>> end
>>
>> def plays=3D(v)
>> =C2=A0@plays =3D self.plays + 1
>> end
>>
>> ~ jf
>> --
>> John Feminella
>> Principal Consultant, BitsBuilder
>> LI: http://www.linkedin.com/in/johnxf
>> SO: http://stackoverflow.com/users/75170/
>
> I think you'd want:
>
> def plays=3D(v)
> =C2=A0@plays =3D v
> end
>
> In your original:
>
> plays =3D 5
> puts plays
> 1 =C2=A0# <=3D=3D ???
>
> I can't imagine that's what the OP wants to see.
>
>
>
>>
>>
>>
>> On Thu, Feb 17, 2011 at 23:04, Sam Duncan <> wrote:
>>>
>>> What is the content of @plays?
>>>
>>> Sam
>>>
>>>
>>> On 18/02/11 17:01, Danny L. wrote:
>>>>
>>>> hey guys the following line of code is producing a "undefined method
>>>> `+':
>>>>
>>>> =C2=A0@plays +=3D 1
>>>>
>>>>
>>>> cheers,
>>>>
>>>> Danny
>>>>
>>>>
>>>
>>>
>>
>
> Rob Biedenharn
> =C2=A0 =C2=A0 =C2=A0http://AgileConsultingLLC.=
com/
> =C2=A0 =C2=A0 =C2=A0 =C2=A0http://GaslightSoftwa=
re.com/
>
>
>