{"action":"created","issue":{"url":"https://api.github.com/repos/dotnet/roslyn/issues/24080","repository_url":"https://api.github.com/repos/dotnet/roslyn","labels_url":"https://api.github.com/repos/dotnet/roslyn/issues/24080/labels{/name}","comments_url":"https://api.github.com/repos/dotnet/roslyn/issues/24080/comments","events_url":"https://api.github.com/repos/dotnet/roslyn/issues/24080/events","html_url":"https://github.com/dotnet/roslyn/pull/24080","id":286519870,"number":24080,"title":"Extend eligible params types to array generic 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version *after* the next major version.","creator":{"login":"gafter","id":3804346,"avatar_url":"https://avatars3.githubusercontent.com/u/3804346?v=4","gravatar_id":"","url":"https://api.github.com/users/gafter","html_url":"https://github.com/gafter","followers_url":"https://api.github.com/users/gafter/followers","following_url":"https://api.github.com/users/gafter/following{/other_user}","gists_url":"https://api.github.com/users/gafter/gists{/gist_id}","starred_url":"https://api.github.com/users/gafter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gafter/subscriptions","organizations_url":"https://api.github.com/users/gafter/orgs","repos_url":"https://api.github.com/users/gafter/repos","events_url":"https://api.github.com/users/gafter/events{/privacy}","received_events_url":"https://api.github.com/users/gafter/received_events","type":"User","site_admin":false},"open_issues":661,"closed_issues":257,"state":"open","created_at":"2016-03-31T00:06:25Z","updated_at":"2018-05-21T23:07:45Z","due_on":null,"closed_at":null},"comments":3,"created_at":"2018-01-06T21:14:23Z","updated_at":"2018-05-22T18:37:16Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/dotnet/roslyn/pulls/24080","html_url":"https://github.com/dotnet/roslyn/pull/24080","diff_url":"https://github.com/dotnet/roslyn/pull/24080.diff","patch_url":"https://github.com/dotnet/roslyn/pull/24080.patch"},"body":"Proposal: https://github.com/dotnet/csharplang/issues/179\r\n\r\n\r\nopen questions:\r\n\r\n- do we want to support all array generic interfaces? (already implemented in this PR)\r\n- do we want to support `params Span<T>` and `params ReadOnlySpan<T>`? (https://github.com/dotnet/csharplang/issues/535) (we can reuse stackalloc initializer lowering in codegen where possible, otherwise we fallback to arrays)\r\n  - this probably need dotnet/roslyn#22046 to be implemented first.\r\n- do we want to forbid conflicting `params` overloads with identical element types? (otherwise all overloads would be always applicable in the expanded form and therefore ambiguous; note: the compiler wouldn't give ambiguous result for that case \"for free\", if we permit that, the overload resolution should be adjusted accordingly)"},"comment":{"url":"https://api.github.com/repos/dotnet/roslyn/issues/comments/391096728","html_url":"https://github.com/dotnet/roslyn/pull/24080#issuecomment-391096728","issue_url":"https://api.github.com/repos/dotnet/roslyn/issues/24080","id":391096728,"user":{"login":"jcouv","id":12466233,"avatar_url":"https://avatars2.githubusercontent.com/u/12466233?v=4","gravatar_id":"","url":"https://api.github.com/users/jcouv","html_url":"https://github.com/jcouv","followers_url":"https://api.github.com/users/jcouv/followers","following_url":"https://api.github.com/users/jcouv/following{/other_user}","gists_url":"https://api.github.com/users/jcouv/gists{/gist_id}","starred_url":"https://api.github.com/users/jcouv/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jcouv/subscriptions","organizations_url":"https://api.github.com/users/jcouv/orgs","repos_url":"https://api.github.com/users/jcouv/repos","events_url":"https://api.github.com/users/jcouv/events{/privacy}","received_events_url":"https://api.github.com/users/jcouv/received_events","type":"User","site_admin":false},"created_at":"2018-05-22T18:37:15Z","updated_at":"2018-05-22T18:37:15Z","author_association":"MEMBER","body":"Sorry for the delay. I'll queue this for discussion in LDM.\r\nThe main open question is what set of types should be recognized for this scenario."}}
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