{"action":"created","issue":{"url":"https://api.github.com/repos/finchers-rs/finchers/issues/44","repository_url":"https://api.github.com/repos/finchers-rs/finchers","labels_url":"https://api.github.com/repos/finchers-rs/finchers/issues/44/labels{/name}","comments_url":"https://api.github.com/repos/finchers-rs/finchers/issues/44/comments","events_url":"https://api.github.com/repos/finchers-rs/finchers/issues/44/events","html_url":"https://github.com/finchers-rs/finchers/issues/44","id":283679637,"number":44,"title":"The difference between the role of `EndpointError` and `Endpoint::Error is unclear","user":{"login":"ubnt-intrepid","id":7354350,"avatar_url":"https://avatars0.githubusercontent.com/u/7354350?v=4","gravatar_id":"","url":"https://api.github.com/users/ubnt-intrepid","html_url":"https://github.com/ubnt-intrepid","followers_url":"https://api.github.com/users/ubnt-intrepid/followers","following_url":"https://api.github.com/users/ubnt-intrepid/following{/other_user}","gists_url":"https://api.github.com/users/ubnt-intrepid/gists{/gist_id}","starred_url":"https://api.github.com/users/ubnt-intrepid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ubnt-intrepid/subscriptions","organizations_url":"https://api.github.com/users/ubnt-intrepid/orgs","repos_url":"https://api.github.com/users/ubnt-intrepid/repos","events_url":"https://api.github.com/users/ubnt-intrepid/events{/privacy}","received_events_url":"https://api.github.com/users/ubnt-intrepid/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":7,"created_at":"2017-12-20T20:03:33Z","updated_at":"2017-12-22T07:15:34Z","closed_at":"2017-12-22T07:15:34Z","author_association":"OWNER","body":"`EndpointError` に色々入っているが、これらのエラーの区別と `Endpoint` 側のエラー方との区別が不明瞭になっている．\r\n\r\n解決が必要なのは以下の通り\r\n* Path, Query の型ミスマッチはどちらに属するべきか\r\n* Skipped の表現方法について\r\n* そもそも必要なのかどうか"},"comment":{"url":"https://api.github.com/repos/finchers-rs/finchers/issues/comments/353537499","html_url":"https://github.com/finchers-rs/finchers/issues/44#issuecomment-353537499","issue_url":"https://api.github.com/repos/finchers-rs/finchers/issues/44","id":353537499,"user":{"login":"ubnt-intrepid","id":7354350,"avatar_url":"https://avatars0.githubusercontent.com/u/7354350?v=4","gravatar_id":"","url":"https://api.github.com/users/ubnt-intrepid","html_url":"https://github.com/ubnt-intrepid","followers_url":"https://api.github.com/users/ubnt-intrepid/followers","following_url":"https://api.github.com/users/ubnt-intrepid/following{/other_user}","gists_url":"https://api.github.com/users/ubnt-intrepid/gists{/gist_id}","starred_url":"https://api.github.com/users/ubnt-intrepid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ubnt-intrepid/subscriptions","organizations_url":"https://api.github.com/users/ubnt-intrepid/orgs","repos_url":"https://api.github.com/users/ubnt-intrepid/repos","events_url":"https://api.github.com/users/ubnt-intrepid/events{/privacy}","received_events_url":"https://api.github.com/users/ubnt-intrepid/received_events","type":"User","site_admin":false},"created_at":"2017-12-22T07:15:34Z","updated_at":"2017-12-22T07:15:34Z","author_association":"OWNER","body":"というわけで（？）`Endpoint::apply` の戻り値は Finch に倣い `Option<Self::Task>` に変更する。`apply` 内で生じたエラーは原則として `Task` のエラーとして返す（汎用性を持たせるため、`Error` に直接エラー型を指定するのではなく次のようにトレイト境界で表現する）\r\n\r\n```rust\r\nstruct Foo<E> { ... }\r\n\r\nimpl<E> Endpoint for Foo<E>"}}
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