{"action":"created","issue":{"url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/issues/8","repository_url":"https://api.github.com/repos/ghc-proposals/ghc-proposals","labels_url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/issues/8/labels{/name}","comments_url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/issues/8/comments","events_url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/issues/8/events","html_url":"https://github.com/ghc-proposals/ghc-proposals/pull/8","id":177949274,"number":8,"title":"Mutable constructor fields","user":{"login":"simonmar","id":609606,"avatar_url":"https://avatars.githubusercontent.com/u/609606?v=3","gravatar_id":"","url":"https://api.github.com/users/simonmar","html_url":"https://github.com/simonmar","followers_url":"https://api.github.com/users/simonmar/followers","following_url":"https://api.github.com/users/simonmar/following{/other_user}","gists_url":"https://api.github.com/users/simonmar/gists{/gist_id}","starred_url":"https://api.github.com/users/simonmar/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/simonmar/subscriptions","organizations_url":"https://api.github.com/users/simonmar/orgs","repos_url":"https://api.github.com/users/simonmar/repos","events_url":"https://api.github.com/users/simonmar/events{/privacy}","received_events_url":"https://api.github.com/users/simonmar/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":15,"created_at":"2016-09-20T02:43:38Z","updated_at":"2016-09-21T01:27:02Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/pulls/8","html_url":"https://github.com/ghc-proposals/ghc-proposals/pull/8","diff_url":"https://github.com/ghc-proposals/ghc-proposals/pull/8.diff","patch_url":"https://github.com/ghc-proposals/ghc-proposals/pull/8.patch"},"body":"This is a proposal to add mutable constructor fields to GHC.\r\n\r\n[Rendered](https://github.com/simonmar/ghc-proposals/blob/mutable-fields/proposals/0000-mutable-fields.rst)"},"comment":{"url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/issues/comments/248484874","html_url":"https://github.com/ghc-proposals/ghc-proposals/pull/8#issuecomment-248484874","issue_url":"https://api.github.com/repos/ghc-proposals/ghc-proposals/issues/8","id":248484874,"user":{"login":"simonmar","id":609606,"avatar_url":"https://avatars.githubusercontent.com/u/609606?v=3","gravatar_id":"","url":"https://api.github.com/users/simonmar","html_url":"https://github.com/simonmar","followers_url":"https://api.github.com/users/simonmar/followers","following_url":"https://api.github.com/users/simonmar/following{/other_user}","gists_url":"https://api.github.com/users/simonmar/gists{/gist_id}","starred_url":"https://api.github.com/users/simonmar/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/simonmar/subscriptions","organizations_url":"https://api.github.com/users/simonmar/orgs","repos_url":"https://api.github.com/users/simonmar/repos","events_url":"https://api.github.com/users/simonmar/events{/privacy}","received_events_url":"https://api.github.com/users/simonmar/received_events","type":"User","site_admin":false},"created_at":"2016-09-21T01:27:02Z","updated_at":"2016-09-21T01:27:02Z","body":"@rwbarton It would be nice to allow mutable unboxed fields.  In fact, there's no reason why `Ref#` shouldn't be able to take a representation-polymorphic type argument, since that doesn't affect the representation of the `Ref#` itself.  However, we would need a family of primitives for reads and writes at the different unboxed types.  I'll add a section about this to the proposal."}}
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