Re: singleton design pattern
Re: singleton design pattern
- Subject: Re: singleton design pattern
- From: Abhinay Kartik Reddyreddy <email@hidden>
- Date: Wed, 19 May 2010 18:45:43 -0400
Thanks GG.
Apologies for the wrong remark.
On May 19, 2010, at 6:33 PM, Greg Guerin wrote:
> Abhinay Kartik Reddyreddy wrote:
>
>> everytime you ask for a uniqueInstance it looks like it retrieves a new instance not the existing instance... since you set the uniqueinstance to nil inside that function, your function will discard the previous instance if any and then create a new instance. Singleton is supposed to return existing instance if any and if none create one.
>>
>> Also i guess the scope of your static is local.
>>
>> correct me if i am wrong.
>
>
> Your assertion that a new instance is created every time is wrong. It would be right if the storage class were anything but static. But it is static. So a new instance is created only once, barring any thread-unsafe artifacts.
>
> By the way, this is true for plain ordinary standard C. Objective-C does not change it.
>
> -- GG
>
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