[BioCocoa-dev] Peptides...

[John Timmer]

> The only little issue is we are trusting the user will read the docs and not
> mess up with the array. A real NSArray is nice, because it respects
> encapsulation much more.

The other alternative is that, if this method is called, the sequence starts
key/value observing the array.  I'm not sure when array operators were
introduced, but if it's 10.2, we could start observing the @count of the
array as soon as somebody got access to it.

That won't help us if anybody starts replacing nucleotides with an amino
acid, but at least allows us to do bounds safety.

JT

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