Ruby on Rails

On 3 February 2014 10:50, Arun kant sharma <iarunkant@gmail.com> wrote:
> Sorry for off topic reply, but how do you quote code using gmail? or I
> should use web interface for posting in group.

Click on the three dots on the bottom left of the input text window to
expand the text.

Colin

>
>
> On Mon, Feb 3, 2014 at 3:23 PM, Frederick Cheung
> <frederick.cheung@gmail.com> wrote:
>>
>>
>>
>> On Monday, February 3, 2014 9:36:25 AM UTC, Роман Ярыгин wrote:
>>>
>>> Now, when I refresh the page every time, the array pops one by one item
>>> and finally get empty! But, why? Why the constant changes, not variable?
>>> What I'm doing wrong?
>>
>>
>> What is constant is that ItServiceJob::TYPES always gives you the same
>> object (in terms of it object_id), but there is nothing to stop you
>> modifying the object.
>>
>> Furthermore,  job_types = ITServiceJob::TYPES isn't copying
>> ItServiceJob::TYPES, it is just creating a local variable that references
>> the exact same ruby object. You can copy the array with .dup (this is a
>> shallow copy). If you want to prevent modifications to an object you need to
>> freeze it (by calling .freeze on it). After this any attempts to modify the
>> object will raise an exception
>>
>> Fred
>>
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