What effect does that have on performance? (Of course, I want to have my
cake and eat it too!)
On Tuesday, May 24, 2016 at 4:03:50 AM UTC-4, Ford Ox wrote:
>
> A little bit more on the topic of encapsulation, if somebody desperately
> wants it.
>
> module...
> export...
> type Foo x end
> type Holder{T} x::T end # don't export this one
> setfield(f::Foo, key, value::Holder) = f.key = value.x
> setfield(f::Foo, key, value) = raise error...
> # Other functions...
> end
>
> Only functions from module will be able to wrap values into Holder, so
> all methods defined elsewhere will raise error when trying to modify Foo
> variables...
>
>
>
