[Biococoa-dev] Caching the NSArray of BCSymbol

[Spam Eater at BiO]

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---------------------

Hmm, although certainly nice to have a link between a view and 
ultimately the sequence, this is the task of a controller class, not the 
model... The model shouldn't know/care of the view. It might be nice, if 
we add controllers to the framework that do this though..
Alex

On 6-jul-2005, at 23:56, Koen van der Drift wrote:

>
> On Jul 6, 2005, at 1:44 PM, Charles Parnot wrote:
>
>
>> Then, we should only cache it in one place: the accessor. Though for 
>> mutable sequences, we also need to remember to set the cached array 
>> to nil after modifications. Something like this:
>>
>> - (NSArray *)symbolArray
>> {
>>     if ( cachedArray == nil ) {
>>         cachedArray = ...  //generate the array (and retain it)
>>     }
>>     return cachedArray;
>> }
>>
>> - (void)emptyCache
>> {
>>     [cachedArray release];
>>     cachedArray = nil;
>> }
>>
>> - (void)appendSequence:(BCSequence *)otherSequence
>> {
>>     //code to append the sequence
>>     ...
>>     //empty the cache: the array is not valid anymore!!
>>     [self emptyCache];
>> }
>>
>>
>> what do you think?
>>
>>
>
>
> Looks like a good start to me :)  Maybe we can write the code in such 
> a way that the BCSequence can be a delegate of another object (eg a view).
>
>
> - Koen.
>
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>

********************************************************* 
                    ** Alexander Griekspoor **
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              The Netherlands Cancer Institute
              Department of Tumorbiology (H4)
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********************************************************* 

                    ** Alexander Griekspoor **

********************************************************* 

              The Netherlands Cancer Institute

              Department of Tumorbiology (H4)

         Plesmanlaan 121, 1066 CX, Amsterdam

                  Tel:  + 31 20 - 512 2023

                  Fax:  + 31 20 - 512 2029

                  E-mail: a.griekspoor at nki.nl <mailto:a.griekspoor at nki.nl>

            AIM: mekentosj at mac.com <mailto:mekentosj at mac.com>

              Web: http://www.mekentosj.com

 

                 EnzymeX - To cut or not to cut 

             http://www.mekentosj.com/enzymex


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