[swift-evolution] Swift's reflection

Slava Pestov spestov at apple.com
Thu Mar 16 16:38:30 CDT 2017

Adding write reflection to the existing Mirrors implementation should not be too difficult and we would accept a well-written PR that adds this capability.


> On Mar 15, 2017, at 8:10 AM, Dimitri Racordon via swift-evolution <swift-evolution at swift.org> wrote:
> Hello fellow evolutionists,
> I’d like to ask if someone knows about the current state of affairs of the evolution of the reflection API in Swift.
> I read it was (or at least used to be) in the scope of Swift 4 to improve on the current capabilities, but failed to see any proposal in that direction since then. I found this evolution post (https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151214/003401.html <https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151214/003401.html>) from quite a while ago, and would like to know if anything progressed since then.
> As a domain specific languages designer, reflection is an essential feature for me. Unfortunately I think Swift is quite behind regarding that point. Most specifically, the inability to set properties discovered from a mirror (without resorting to the black magic of unsafe pointers) has a huge impact on the simplicity of embedded DSLs.
> Thanks,
> Dimitri Racordon
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