これは嬉しい https://github.com/apple/swift/pull/12779

Add key encoding strategy to JSONEncoder by parkera · Pull Request #12779 · apple/swift

Adds a "strategy" for handling snake and camel case conversions for JSONEncoder and JSONDecoder. Proposal is available here: apple/swift-corelibs-foundation#1301

12:11 AM

オレオレエンコーダにも追加しよう。