Keyに略語などで全部大文字な単語とかが含まれると、JSONEncoder.KeyEncodingStrategy.convertToSnakeCaseとJSONDecoder.KeyDecodingStrategy.convertFromSnakeCaseが非対称となる問題のスレッドがSwift Forumではじまりました。 https://forums.swift.org/t/handling-edge-cases-in-jsonencoder-jsondecoder-key-conversion-strategies-sr-6629/12384

import Foundation struct S: Codable { var myURLProperty: String } let encoder = JSONEncoder() encoder.keyEncodingStrategy = .convertToSnakeCase let data = try encoder.encode(S(myURLProperty: "property")) let decoder = JSONDecoder() decoder.keyDecodingStrategy = .convertFromSnakeCase let decoded = try decoder.decode(S.self, from: data) // "No value associated with key CodingKeys(stringValue: \"myURLProperty\", intValue: nil) (\"myURLProperty\"), converted to my_url_property."

上記コードはLinuxでは動きません。 (edited)

Handling edge cases in JSONEncoder/JSONDecoder key conversion stra...

@hartbit recently revived some discussion about this topic in a PR by @norio_nomura, and I figured that instead of restricting the discussion to the PR, this would be a perfect opportunity to solicit some community feedback. As such: Hi all, I...