[Bioperl-l] Re: Bio::PrimarySeqI

[Ewan Birney]

On Mon, 19 Feb 2001, Hilmar Lapp wrote:

> <warning: the following is very technical>
> 
> I started some cleanup work and cruft busting, beginning with seq
> classes.
> 
> Some points about Bio::PrimarySeqI (and possibly others):
> - Do we still need can_call_new()? First, we can create an object
> of the same type by ref($self)->new() instead of $self->new().
> Second, every object can now accept $self->new(). The second may
> not necessarily be true for implementing classes that do not
> inherit from RootI, but the first is always true. (Isn't it?)
> - I thought we keep interfaces free of mutability-requirements.
> PrimarySeqI->desc() mentiones setting, too. I haven't checked
> others. Do we want to implement mutability-free as a general
> guideline for interfaces?

We need can-call-new. Some people (who are fronting databases) have 
very thin wrappers over database handles implementing PrimarySeq, and we
shouldn't (in my view) burden them with having to catch ->new calls in a
fancy way to handle trunc/revcom etc...



> 
> More to follow possibly.
> 
> 	Hilmar
> -- 
> -----------------------------------------------------------------
> Hilmar Lapp                              email: hlapp@gmx.net
> GNF, San Diego, Ca. 92122                phone: +1 858 812 1757
> -----------------------------------------------------------------
> 

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