Bit field macro

[Diggory]

[Pitch] `@OptionSet` macro

Hi Swift Evolution, Here's a proposal for a macro to facilitate declaring option sets. Note this relies on SE-0389, currently in review. Proposal PR can be found here. Option Set Declaration Macro Proposal: SE-NNNN Authors: Doug Gregor, Ben Cohen Review Manager: TBD Status: Awaiting review Implementation: DougGregor/swift-macro-examples#17 Introduction This proposal introduces an attached macro @OptionSet which takes over the boilerplate required when declaring a bitfield-based option …