{"action":"created","issue":{"url":"https://api.github.com/repos/scala/collection-strawman/issues/53","repository_url":"https://api.github.com/repos/scala/collection-strawman","labels_url":"https://api.github.com/repos/scala/collection-strawman/issues/53/labels{/name}","comments_url":"https://api.github.com/repos/scala/collection-strawman/issues/53/comments","events_url":"https://api.github.com/repos/scala/collection-strawman/issues/53/events","html_url":"https://github.com/scala/collection-strawman/pull/53","id":217283627,"number":53,"title":"HashSet and ListSet","user":{"login":"julienrf","id":332812,"avatar_url":"https://avatars1.githubusercontent.com/u/332812?v=3","gravatar_id":"","url":"https://api.github.com/users/julienrf","html_url":"https://github.com/julienrf","followers_url":"https://api.github.com/users/julienrf/followers","following_url":"https://api.github.com/users/julienrf/following{/other_user}","gists_url":"https://api.github.com/users/julienrf/gists{/gist_id}","starred_url":"https://api.github.com/users/julienrf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/julienrf/subscriptions","organizations_url":"https://api.github.com/users/julienrf/orgs","repos_url":"https://api.github.com/users/julienrf/repos","events_url":"https://api.github.com/users/julienrf/events{/privacy}","received_events_url":"https://api.github.com/users/julienrf/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-03-27T15:27:10Z","updated_at":"2017-03-28T14:06:16Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/scala/collection-strawman/pulls/53","html_url":"https://github.com/scala/collection-strawman/pull/53","diff_url":"https://github.com/scala/collection-strawman/pull/53.diff","patch_url":"https://github.com/scala/collection-strawman/pull/53.patch"},"body":"In a process of getting something usable by users as quickly as possible, I’m starting by replacing triple question marks by actual implementations.\r\n\r\nThis PR adds immutable `HashSet` and `ListSet`. I mostly copy-pasted the current implementation from 2.12."},"comment":{"url":"https://api.github.com/repos/scala/collection-strawman/issues/comments/289780833","html_url":"https://github.com/scala/collection-strawman/pull/53#issuecomment-289780833","issue_url":"https://api.github.com/repos/scala/collection-strawman/issues/53","id":289780833,"user":{"login":"julienrf","id":332812,"avatar_url":"https://avatars1.githubusercontent.com/u/332812?v=3","gravatar_id":"","url":"https://api.github.com/users/julienrf","html_url":"https://github.com/julienrf","followers_url":"https://api.github.com/users/julienrf/followers","following_url":"https://api.github.com/users/julienrf/following{/other_user}","gists_url":"https://api.github.com/users/julienrf/gists{/gist_id}","starred_url":"https://api.github.com/users/julienrf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/julienrf/subscriptions","organizations_url":"https://api.github.com/users/julienrf/orgs","repos_url":"https://api.github.com/users/julienrf/repos","events_url":"https://api.github.com/users/julienrf/events{/privacy}","received_events_url":"https://api.github.com/users/julienrf/received_events","type":"User","site_admin":false},"created_at":"2017-03-28T14:06:16Z","updated_at":"2017-03-28T14:06:16Z","body":"Another performance regression revealed by the benchmark:\r\n\r\n![foreach](https://cloud.githubusercontent.com/assets/332812/24409386/58c19d94-13d0-11e7-8378-aea6fae5e5fa.png)\r\n\r\n(the blue line shows Scala’s current `HashSet`)\r\n\r\nActually several operations are 1.5 to 2 times slower in our new `HashSet`."}}
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