[Biococoa-dev] BCSymbolSet

[Alexander Griekspoor]

On 10-mrt-05, at 22:37, Charles PARNOT wrote:

> At 21:55 +0100 3/10/05, Alexander Griekspoor wrote:
>> Oh, sorry, I missed parts of the symbolset discussion, but I thought 
>> I remember having read a strong advocacy (John ?) for a non-mutable 
>> symbolset...
>> Never mind...
>> Alex
>>
>
> sorry, very short:
>
> * the user should not be able to modify a prebuilt symbol set   [John 
> (and me agree)]
Yep, same here.

> * One should not be able to change the symbolSet of a sequence, that 
> would be disastrous [me]
Me too, but perhaps you CAN add symbols (like ambiguity to a perfect 
ATCG sequence), but certainly not remove one.

> * all the arguments that usually apply in the mutable vs immutable 
> design, with the added fact that symbol sets are small and thus easy 
> to copy [me; also applies to sequences]
Yes, I think you have a point. Say you want to merge two sets, it's 
just as easy (or maybe easier) to get the merge than to add the symbols 
of one to the other...
This is exactly why I asked about the mutability, so it should have 
been: (Charles?) ;-)
Alex

>
> charles
>
> -- 
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>
> Charles Parnot
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>
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                     ** Alexander Griekspoor **
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