On Sep 30, 2016, at 2:51 PM, Ted F.A. van Gaalen via swift-evolution 
<[email protected]> wrote:
> Is it possible to have best of (these completely different) both worlds? 

Yes, of course it is.  Your email spends a lot of words trying to form a false 
dichotomy.  Swift can definitely have both awesome dynamic features while still 
having performance, predictability and safety.

> Would it be possible in Swift to have facilities to generate objects 
> dynamically at runtime? and, if desirable, how can such be implemented?

Here’s an extant implementation that you can use today:
https://github.com/Zewo/Reflection

I’m sure it isn’t ideal, but it proves that it can be done.  When we have 
bandwidth to reevaluate this area from first principles, I’m sure we can make 
improvements on it.

I will grant you that Smalltalk is a beautiful language in its simplicity, but 
for that simplicity it makes many tradeoffs that we’re not willing to make.  We 
are willing to make the internal implementation of Swift complex if that means 
that we get a beautiful model for programmers - one that preserves the virtues 
of safety-by-default, predictability, performance, and joy-to-develop-in.

The meme of “Swift can never (or will never) support dynamic features” is 
tired, and also wildly inaccurate.

-Chris

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