{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/18642","repository_url":"https://api.github.com/repos/JuliaLang/julia","labels_url":"https://api.github.com/repos/JuliaLang/julia/issues/18642/labels{/name}","comments_url":"https://api.github.com/repos/JuliaLang/julia/issues/18642/comments","events_url":"https://api.github.com/repos/JuliaLang/julia/issues/18642/events","html_url":"https://github.com/JuliaLang/julia/pull/18642","id":178767956,"number":18642,"title":"Restructure of the promotion mechanism for broadcast","user":{"login":"pabloferz","id":8410335,"avatar_url":"https://avatars.githubusercontent.com/u/8410335?v=3","gravatar_id":"","url":"https://api.github.com/users/pabloferz","html_url":"https://github.com/pabloferz","followers_url":"https://api.github.com/users/pabloferz/followers","following_url":"https://api.github.com/users/pabloferz/following{/other_user}","gists_url":"https://api.github.com/users/pabloferz/gists{/gist_id}","starred_url":"https://api.github.com/users/pabloferz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pabloferz/subscriptions","organizations_url":"https://api.github.com/users/pabloferz/orgs","repos_url":"https://api.github.com/users/pabloferz/repos","events_url":"https://api.github.com/users/pabloferz/events{/privacy}","received_events_url":"https://api.github.com/users/pabloferz/received_events","type":"User","site_admin":false},"labels":[{"id":171886684,"url":"https://api.github.com/repos/JuliaLang/julia/labels/types%20and%20dispatch","name":"types and dispatch","color":"fef2c0","default":false},{"id":418435319,"url":"https://api.github.com/repos/JuliaLang/julia/labels/vectorization","name":"vectorization","color":"1d76db","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":25,"created_at":"2016-09-23T02:13:47Z","updated_at":"2016-11-07T17:21:19Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/JuliaLang/julia/pulls/18642","html_url":"https://github.com/JuliaLang/julia/pull/18642","diff_url":"https://github.com/JuliaLang/julia/pull/18642.diff","patch_url":"https://github.com/JuliaLang/julia/pull/18642.patch"},"body":"This addresses #18622 and replaces #18623. This PR is an overhaul of the promotion mechanism for `broadcast` and gets rid off some `promote_eltype_op`  and  `_promote_op` methods. The later is somewhat replaced by the already existing `_default_eltype` which is used by `map` and comprehensions.\n"},"comment":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/comments/258900722","html_url":"https://github.com/JuliaLang/julia/pull/18642#issuecomment-258900722","issue_url":"https://api.github.com/repos/JuliaLang/julia/issues/18642","id":258900722,"user":{"login":"stevengj","id":2913679,"avatar_url":"https://avatars.githubusercontent.com/u/2913679?v=3","gravatar_id":"","url":"https://api.github.com/users/stevengj","html_url":"https://github.com/stevengj","followers_url":"https://api.github.com/users/stevengj/followers","following_url":"https://api.github.com/users/stevengj/following{/other_user}","gists_url":"https://api.github.com/users/stevengj/gists{/gist_id}","starred_url":"https://api.github.com/users/stevengj/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/stevengj/subscriptions","organizations_url":"https://api.github.com/users/stevengj/orgs","repos_url":"https://api.github.com/users/stevengj/repos","events_url":"https://api.github.com/users/stevengj/events{/privacy}","received_events_url":"https://api.github.com/users/stevengj/received_events","type":"User","site_admin":false},"created_at":"2016-11-07T17:21:19Z","updated_at":"2016-11-07T17:21:19Z","body":"Yeah, it doesn't look like the [sparse-transpose code](https://github.com/JuliaLang/julia/blob/410b39c0f58673748b63b677db0bfaf71f6e4676/base/sparse/sparsematrix.jl#L771-L791) uses anything touched by this PR.\r\n\r\nThe travis failure seems to be an unrelated network problem with `apt-get`.\r\n\r\nI think this is okay to merge."}}
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