{"action":"created","issue":{"url":"https://api.github.com/repos/rust-lang/rfcs/issues/1177","labels_url":"https://api.github.com/repos/rust-lang/rfcs/issues/1177/labels{/name}","comments_url":"https://api.github.com/repos/rust-lang/rfcs/issues/1177/comments","events_url":"https://api.github.com/repos/rust-lang/rfcs/issues/1177/events","html_url":"https://github.com/rust-lang/rfcs/pull/1177","id":91318999,"number":1177,"title":"Anonymous/placeholder lifetime \"'_\".","user":{"login":"eddyb","id":77424,"avatar_url":"https://avatars.githubusercontent.com/u/77424?v=3","gravatar_id":"","url":"https://api.github.com/users/eddyb","html_url":"https://github.com/eddyb","followers_url":"https://api.github.com/users/eddyb/followers","following_url":"https://api.github.com/users/eddyb/following{/other_user}","gists_url":"https://api.github.com/users/eddyb/gists{/gist_id}","starred_url":"https://api.github.com/users/eddyb/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/eddyb/subscriptions","organizations_url":"https://api.github.com/users/eddyb/orgs","repos_url":"https://api.github.com/users/eddyb/repos","events_url":"https://api.github.com/users/eddyb/events{/privacy}","received_events_url":"https://api.github.com/users/eddyb/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/rust-lang/rfcs/labels/T-lang","name":"T-lang","color":"bfd4f2"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":10,"created_at":"2015-06-26T17:46:22Z","updated_at":"2015-07-02T16:53:18Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/rust-lang/rfcs/pulls/1177","html_url":"https://github.com/rust-lang/rfcs/pull/1177","diff_url":"https://github.com/rust-lang/rfcs/pull/1177.diff","patch_url":"https://github.com/rust-lang/rfcs/pull/1177.patch"},"body":"Initial implementation available at rust-lang/rust#26598."},"comment":{"url":"https://api.github.com/repos/rust-lang/rfcs/issues/comments/118091638","html_url":"https://github.com/rust-lang/rfcs/pull/1177#issuecomment-118091638","issue_url":"https://api.github.com/repos/rust-lang/rfcs/issues/1177","id":118091638,"user":{"login":"pnkfelix","id":173127,"avatar_url":"https://avatars.githubusercontent.com/u/173127?v=3","gravatar_id":"","url":"https://api.github.com/users/pnkfelix","html_url":"https://github.com/pnkfelix","followers_url":"https://api.github.com/users/pnkfelix/followers","following_url":"https://api.github.com/users/pnkfelix/following{/other_user}","gists_url":"https://api.github.com/users/pnkfelix/gists{/gist_id}","starred_url":"https://api.github.com/users/pnkfelix/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pnkfelix/subscriptions","organizations_url":"https://api.github.com/users/pnkfelix/orgs","repos_url":"https://api.github.com/users/pnkfelix/repos","events_url":"https://api.github.com/users/pnkfelix/events{/privacy}","received_events_url":"https://api.github.com/users/pnkfelix/received_events","type":"User","site_admin":false},"created_at":"2015-07-02T16:53:18Z","updated_at":"2015-07-02T16:53:18Z","body":"@eddyb well, it seems like the hypothetical confusion described by @nrc would arise under the planned uses... i'm thinking in particular of a case like:\r\n\r\n```rust\r\nstruct Context<'a, 'left: 'a, 'right: 'a, 'd> {\r\n    left: &'a Inner<'left>,\r\n    right: &'a Inner<'right>,\r\n    data: &'d str,\r\n}\r\n\r\nfn neither<'data>(cx: Context<'_, '_, '_, 'data>) -> &'data str {\r\n    cx.data\r\n}\r\n```\r\n\r\nwhere it sounds like @nrc is worried that people will interpret the above as injecting a single fresh lifetime and then constraining the first three lifetime parameters to `Context` to all be assigned that single lifetime."}}