{"action":"created","issue":{"url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/issues/1817","labels_url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/issues/1817/labels{/name}","comments_url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/issues/1817/comments","events_url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/issues/1817/events","html_url":"https://github.com/ReactiveCocoa/ReactiveCocoa/pull/1817","id":60374501,"number":1817,"title":"add new operator(Signal.mapError) and 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some of the [bigger underlying concepts in RAC](https://gist.github.com/jspahrsummers/7000136), particularly those inspired by Rx.\r\n\r\nHowever, we need to take backwards compatibility more seriously than we did for 1.x → 2.0, since our long-time users have already gone through that hellish migration, and we've gained even more users since then.","creator":{"login":"jspahrsummers","id":432536,"avatar_url":"https://avatars.githubusercontent.com/u/432536?v=3","gravatar_id":"","url":"https://api.github.com/users/jspahrsummers","html_url":"https://github.com/jspahrsummers","followers_url":"https://api.github.com/users/jspahrsummers/followers","following_url":"https://api.github.com/users/jspahrsummers/following{/other_user}","gists_url":"https://api.github.com/users/jspahrsummers/gists{/gist_id}","starred_url":"https://api.github.com/users/jspahrsummers/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jspahrsummers/subscriptions","organizations_url":"https://api.github.com/users/jspahrsummers/orgs","repos_url":"https://api.github.com/users/jspahrsummers/repos","events_url":"https://api.github.com/users/jspahrsummers/events{/privacy}","received_events_url":"https://api.github.com/users/jspahrsummers/received_events","type":"User","site_admin":true},"open_issues":11,"closed_issues":237,"state":"open","created_at":"2013-08-04T02:52:56Z","updated_at":"2015-03-10T17:25:43Z","due_on":null,"closed_at":null},"comments":3,"created_at":"2015-03-09T16:54:59Z","updated_at":"2015-03-10T17:34:15Z","closed_at":"2015-03-10T17:24:36Z","pull_request":{"url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/pulls/1817","html_url":"https://github.com/ReactiveCocoa/ReactiveCocoa/pull/1817","diff_url":"https://github.com/ReactiveCocoa/ReactiveCocoa/pull/1817.diff","patch_url":"https://github.com/ReactiveCocoa/ReactiveCocoa/pull/1817.patch"},"body":"add new operator(Signal.mapError) which would map from errors to other errors and corresponding tests #1814 "},"comment":{"url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/issues/comments/78105452","html_url":"https://github.com/ReactiveCocoa/ReactiveCocoa/pull/1817#issuecomment-78105452","issue_url":"https://api.github.com/repos/ReactiveCocoa/ReactiveCocoa/issues/1817","id":78105452,"user":{"login":"jspahrsummers","id":432536,"avatar_url":"https://avatars.githubusercontent.com/u/432536?v=3","gravatar_id":"","url":"https://api.github.com/users/jspahrsummers","html_url":"https://github.com/jspahrsummers","followers_url":"https://api.github.com/users/jspahrsummers/followers","following_url":"https://api.github.com/users/jspahrsummers/following{/other_user}","gists_url":"https://api.github.com/users/jspahrsummers/gists{/gist_id}","starred_url":"https://api.github.com/users/jspahrsummers/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jspahrsummers/subscriptions","organizations_url":"https://api.github.com/users/jspahrsummers/orgs","repos_url":"https://api.github.com/users/jspahrsummers/repos","events_url":"https://api.github.com/users/jspahrsummers/events{/privacy}","received_events_url":"https://api.github.com/users/jspahrsummers/received_events","type":"User","site_admin":true},"created_at":"2015-03-10T17:34:15Z","updated_at":"2015-03-10T17:34:15Z","body":"Thanks @iCodesign and @neilpa! :green_heart: "}}