{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/15579","repository_url":"https://api.github.com/repos/JuliaLang/julia","labels_url":"https://api.github.com/repos/JuliaLang/julia/issues/15579/labels{/name}","comments_url":"https://api.github.com/repos/JuliaLang/julia/issues/15579/comments","events_url":"https://api.github.com/repos/JuliaLang/julia/issues/15579/events","html_url":"https://github.com/JuliaLang/julia/pull/15579","id":142414897,"number":15579,"title":"prevent slow fallback for sparsevector *,/ scalar","user":{"login":"KristofferC","id":1282691,"avatar_url":"https://avatars.githubusercontent.com/u/1282691?v=3","gravatar_id":"","url":"https://api.github.com/users/KristofferC","html_url":"https://github.com/KristofferC","followers_url":"https://api.github.com/users/KristofferC/followers","following_url":"https://api.github.com/users/KristofferC/following{/other_user}","gists_url":"https://api.github.com/users/KristofferC/gists{/gist_id}","starred_url":"https://api.github.com/users/KristofferC/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/KristofferC/subscriptions","organizations_url":"https://api.github.com/users/KristofferC/orgs","repos_url":"https://api.github.com/users/KristofferC/repos","events_url":"https://api.github.com/users/KristofferC/events{/privacy}","received_events_url":"https://api.github.com/users/KristofferC/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/JuliaLang/julia/labels/sparse","name":"sparse","color":"fad8c7"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":38,"created_at":"2016-03-21T17:26:06Z","updated_at":"2016-03-25T19:02:14Z","closed_at":"2016-03-25T18:55:56Z","pull_request":{"url":"https://api.github.com/repos/JuliaLang/julia/pulls/15579","html_url":"https://github.com/JuliaLang/julia/pull/15579","diff_url":"https://github.com/JuliaLang/julia/pull/15579.diff","patch_url":"https://github.com/JuliaLang/julia/pull/15579.patch"},"body":"Fixes #15577 "},"comment":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/comments/201429885","html_url":"https://github.com/JuliaLang/julia/pull/15579#issuecomment-201429885","issue_url":"https://api.github.com/repos/JuliaLang/julia/issues/15579","id":201429885,"user":{"login":"carnaval","id":5307791,"avatar_url":"https://avatars.githubusercontent.com/u/5307791?v=3","gravatar_id":"","url":"https://api.github.com/users/carnaval","html_url":"https://github.com/carnaval","followers_url":"https://api.github.com/users/carnaval/followers","following_url":"https://api.github.com/users/carnaval/following{/other_user}","gists_url":"https://api.github.com/users/carnaval/gists{/gist_id}","starred_url":"https://api.github.com/users/carnaval/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/carnaval/subscriptions","organizations_url":"https://api.github.com/users/carnaval/orgs","repos_url":"https://api.github.com/users/carnaval/repos","events_url":"https://api.github.com/users/carnaval/events{/privacy}","received_events_url":"https://api.github.com/users/carnaval/received_events","type":"User","site_admin":false},"created_at":"2016-03-25T19:02:14Z","updated_at":"2016-03-25T19:02:14Z","body":"As an aside, I do agree that giving an answer that differs from the dense case is very wrong, however giving an error is not the same. In fact, the identity `f(a) == f(full(a))` is still true in that the set of possible return values is still `{true}`, the return values of a function throwing an exception is the empty set (ie bottom)."}}