{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/16112","repository_url":"https://api.github.com/repos/JuliaLang/julia","labels_url":"https://api.github.com/repos/JuliaLang/julia/issues/16112/labels{/name}","comments_url":"https://api.github.com/repos/JuliaLang/julia/issues/16112/comments","events_url":"https://api.github.com/repos/JuliaLang/julia/issues/16112/events","html_url":"https://github.com/JuliaLang/julia/issues/16112","id":151774153,"number":16112,"title":"No isnull for arrays?","user":{"login":"tlnagy","id":1661487,"avatar_url":"https://avatars.githubusercontent.com/u/1661487?v=3","gravatar_id":"","url":"https://api.github.com/users/tlnagy","html_url":"https://github.com/tlnagy","followers_url":"https://api.github.com/users/tlnagy/followers","following_url":"https://api.github.com/users/tlnagy/following{/other_user}","gists_url":"https://api.github.com/users/tlnagy/gists{/gist_id}","starred_url":"https://api.github.com/users/tlnagy/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tlnagy/subscriptions","organizations_url":"https://api.github.com/users/tlnagy/orgs","repos_url":"https://api.github.com/users/tlnagy/repos","events_url":"https://api.github.com/users/tlnagy/events{/privacy}","received_events_url":"https://api.github.com/users/tlnagy/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2016-04-29T00:50:14Z","updated_at":"2016-04-29T01:08:40Z","closed_at":null,"body":"Base doesn't have any way of checking which positions in an array have valid values. \r\n\r\n```{.julia}\r\na = Nullable{Float64}[]\r\nfor i in 1:10\r\n    push!(a, Nullable{Float64}())\r\nend\r\na[1] = 2.0\r\nisnull(a)\r\n```\r\nwhile the following works\r\n\r\n```{.julia}\r\nmap(x -> isnull(x), a)\r\n```"},"comment":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/comments/215605735","html_url":"https://github.com/JuliaLang/julia/issues/16112#issuecomment-215605735","issue_url":"https://api.github.com/repos/JuliaLang/julia/issues/16112","id":215605735,"user":{"login":"andreasnoack","id":505001,"avatar_url":"https://avatars.githubusercontent.com/u/505001?v=3","gravatar_id":"","url":"https://api.github.com/users/andreasnoack","html_url":"https://github.com/andreasnoack","followers_url":"https://api.github.com/users/andreasnoack/followers","following_url":"https://api.github.com/users/andreasnoack/following{/other_user}","gists_url":"https://api.github.com/users/andreasnoack/gists{/gist_id}","starred_url":"https://api.github.com/users/andreasnoack/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/andreasnoack/subscriptions","organizations_url":"https://api.github.com/users/andreasnoack/orgs","repos_url":"https://api.github.com/users/andreasnoack/repos","events_url":"https://api.github.com/users/andreasnoack/events{/privacy}","received_events_url":"https://api.github.com/users/andreasnoack/received_events","type":"User","site_admin":false},"created_at":"2016-04-29T01:08:40Z","updated_at":"2016-04-29T01:08:40Z","body":"`map(isnull, a)`"}}