AWSのAPI Gatewayを試していたところ、API(API Gatewayの)でJSON Patchなるものを使うことになりました。よくわからんちんでしたが、RFCが出ているということなので読んでみました。以下メモ。 RFC JavaScript Object Notation (JSON) Pointer JavaScript Object Notation (JSON) Patch overview JSON PointerはJSOCドキュメント中の位置を表す仕様。XMLのXPathみたいなもの。 ABNFで書くと json-pointer = *( "/" reference-token ) reference-token = *( unescaped / escaped ) unescaped = %x00-2E / %x30-7D / %x7F-10FFFF つまり%x2F
![JSON PointerとJSON Patch - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/ce78d8a979a2e1d6d55ee87f94a57d47f49cd358/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9SlNPTiUyMFBvaW50ZXIlRTMlODElQThKU09OJTIwUGF0Y2gmdHh0LWFsaWduPWxlZnQlMkN0b3AmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT01NiZzPThmNjFmM2JiYjRmNjU0NzZlM2YzYTY3YzljNmUzYjMw%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDB0YWtudWtpJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz04N2M0YWRiNjI4ZDk1ZTY4NTQxN2M5N2YwNDgzMDk3Mg%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4g44OV44Ol44O844OB44Oj44O85qCq5byP5Lya56S-%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3D00ec489d7ab5ed1897950454564e1162)