[Bioperl-l] Bio::FeatureHolderI interface confusion

[Hilmar Lapp]

On Thursday, June 19, 2003, at 01:06  AM, Ewan Birney wrote:

>>
>> Ok, here's a constructive suggestion
>>
>> (1) add mutability operations to the SeqFeatureI interface, as Hilmar
>> suggests.
>
> I *really* dislike mutability to interfaces. Certain implementations 
> just
> can't do it. Mutability is an implementation specific case. Or we need 
> to
> split into immutable and mutable interfaces.
>
>

I agree with certain implementations not being able to support 
mutability. Splitting into mutable and immutable interfaces does 
contribute to the explosion of interfaces though, and quite honestly in 
90% of use cases you need mutability anyway, and literally all modules 
in bioperl are mutable.

What about allowing implementors to throw an exception on set if they 
don't support mutability?

	-hilmar

-- 
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Hilmar Lapp                            email: lapp at gnf.org
GNF, San Diego, Ca. 92121              phone: +1-858-812-1757
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