{"action":"opened","issue":{"url":"https://api.github.com/repos/baronfel/issueTestRepo3/issues/24","repository_url":"https://api.github.com/repos/baronfel/issueTestRepo3","labels_url":"https://api.github.com/repos/baronfel/issueTestRepo3/issues/24/labels{/name}","comments_url":"https://api.github.com/repos/baronfel/issueTestRepo3/issues/24/comments","events_url":"https://api.github.com/repos/baronfel/issueTestRepo3/issues/24/events","html_url":"https://github.com/baronfel/issueTestRepo3/issues/24","id":182435681,"number":24,"title":"Add compiler-warning when using mutable or ref","user":{"login":"baronfel","id":573979,"avatar_url":"https://avatars.githubusercontent.com/u/573979?v=3","gravatar_id":"","url":"https://api.github.com/users/baronfel","html_url":"https://github.com/baronfel","followers_url":"https://api.github.com/users/baronfel/followers","following_url":"https://api.github.com/users/baronfel/following{/other_user}","gists_url":"https://api.github.com/users/baronfel/gists{/gist_id}","starred_url":"https://api.github.com/users/baronfel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/baronfel/subscriptions","organizations_url":"https://api.github.com/users/baronfel/orgs","repos_url":"https://api.github.com/users/baronfel/repos","events_url":"https://api.github.com/users/baronfel/events{/privacy}","received_events_url":"https://api.github.com/users/baronfel/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-10-12T05:01:38Z","updated_at":"2016-10-12T05:01:38Z","closed_at":null,"body":"# Idea 10011624: Add compiler-warning when using mutable or ref #\n\n**Status : declined**  \n**Submitted by Wael on 10/1/2015 12:00:00 AM**  \n**7 votes**\n\nadd compiler flag: --warn-mutable, --warn-ref which would generate warning when using mutable (either mutable keyword or when using ref).\r\nThis would allow pure modules to be made.\r\nNote that F# doesn't have any \"pure\" tags on member methods like the \"const\" qualifier on C++ methods.\n\n\n\n## Response \n** by fslang-admin on 1/23/2016 12:00:00 AM **\n\nSee comment above. Declined since we’d prefer this to be implemented in tools such as FSharpLint.\r\nDon Syme, F# Language and Core Library Evolution\n[Archived Uservoice Comments](../tree/master/archive/suggestion-10011624-add-compiler-warning-when-using-mutable-or-ref.md#comments)\n"}}
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