If the input is a scalar and the output is a scalar, that's also type-stable.
Type-stability is about "predictability of the output type, given the input
types," not "always returns the same type."
Also, wrapping scalars in an array will have a significant performance cost.
Best,
--Tim
On Thursday, February 11, 2016 12:44:19 AM Michael Borregaard wrote:
> Note that both of these versions will return an array, allowing for type
> stability
>
> Den torsdag den 11. februar 2016 kl. 09.40.27 UTC+1 skrev Michael
>
> Borregaard:
> > If you are worried about maintaining two versions, that can be solved
> > simply:
> > function foo(x::Vector{bar})
> >
> > #the main code of your function
> >
> > end
> >
> > function foo(x::bar)
> >
> > foo([x])
> >
> > end
