↓連休中にレビュー入りしてた John McCall による Proposal 。 "This proposal is a core part of the Ownership feature, which was described in the ownership manifesto." らしい。 @omochimetaru が興味ありそう。 https://github.com/apple/swift-evolution/blob/master/proposals/0176-enforce-exclusive-access-to-memory.md

swift-evolution - This maintains proposals for changes and user-visible enhancements to the Swift Programming Language.