[Biococoa-dev] Design question
Koen van der Drift
kvddrift at earthlink.net
Fri Aug 6 19:16:33 EDT 2004
On Aug 6, 2004, at 6:37 PM, John Timmer wrote:
> I had sent out an RTF file with some ideas on how to construct the
> class -
> if you hadn't gotten it, let me know and I'll resend it. It hadn't
> triggered any discussion yet, but I'd assumed that was because it was
> ideas and no code yet.
Yes I have seen that. I meant the recent messages from yesterday.
>> Additionally this class could have an NSMutableArray member consisting
>> of objects that represent each single base, amino acid. Whenever the
>> NSString is edited, the NSMutableArray is updated, and vice versa.
> I'm curious as to what this adds that a string doesn't.
You can access/manipulate more information about each base/amino acid.
If you just have a letter, you don't have that info in the object, only
an identifier. But I agree that it could be very processor intensive
for very long sequences.
> Relevant to this, I'm planning on using a few enumerations (ie -
> BCDNASequence, BCProteinSequence, BCRNASequence), but haven't done so
> ObjC before. Where do they get defined, and does anybody have some
> they're willing to share with me to make sure I don't screw that up?
Why not use an NSArray, etc? They have built-in enumerators. Also look
at the NSScanner class to quickly find a character or string in another
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