{"action":"created","issue":{"url":"https://api.github.com/repos/notnil/chess/issues/28","repository_url":"https://api.github.com/repos/notnil/chess","labels_url":"https://api.github.com/repos/notnil/chess/issues/28/labels{/name}","comments_url":"https://api.github.com/repos/notnil/chess/issues/28/comments","events_url":"https://api.github.com/repos/notnil/chess/issues/28/events","html_url":"https://github.com/notnil/chess/issues/28","id":391521071,"node_id":"MDU6SXNzdWUzOTE1MjEwNzE=","number":28,"title":"Replace Hashing method","user":{"login":"Kerrigan29a","id":673337,"node_id":"MDQ6VXNlcjY3MzMzNw==","avatar_url":"https://avatars1.githubusercontent.com/u/673337?v=4","gravatar_id":"","url":"https://api.github.com/users/Kerrigan29a","html_url":"https://github.com/Kerrigan29a","followers_url":"https://api.github.com/users/Kerrigan29a/followers","following_url":"https://api.github.com/users/Kerrigan29a/following{/other_user}","gists_url":"https://api.github.com/users/Kerrigan29a/gists{/gist_id}","starred_url":"https://api.github.com/users/Kerrigan29a/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Kerrigan29a/subscriptions","organizations_url":"https://api.github.com/users/Kerrigan29a/orgs","repos_url":"https://api.github.com/users/Kerrigan29a/repos","events_url":"https://api.github.com/users/Kerrigan29a/events{/privacy}","received_events_url":"https://api.github.com/users/Kerrigan29a/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-12-17T00:19:48Z","updated_at":"2018-12-17T20:55:20Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"The hashing method it's very expensive (because of the MD5 dependency) to use it in any cache or transposition table. I suggest to implement [Zobrist hashing](https://en.wikipedia.org/wiki/Zobrist_hashing) wich is the de-facto standard.\r\n\r\nPossible reference implementations:\r\n- dylhunn/dragontoothmg (Go): https://github.com/dylhunn/dragontoothmg/blob/b0146de1e275d419ae46e1f36d3cec255d5a2a7b/util.go#L11\r\n- niklasf/python-chess (Python): https://github.com/niklasf/python-chess/blob/f4e7c53a3695af6d5e14da04e69fcb862f378cac/chess/polyglot.py#L230, https://github.com/dylhunn/dragontoothmg/blob/b0146de1e275d419ae46e1f36d3cec255d5a2a7b/constants.go#L21\r\n- lemire/zobristhashing (C): https://github.com/lemire/zobristhashing/blob/f51882643d27845e5017bcbdcac79f2522c33532/src/zobrist.c"},"comment":{"url":"https://api.github.com/repos/notnil/chess/issues/comments/447995485","html_url":"https://github.com/notnil/chess/issues/28#issuecomment-447995485","issue_url":"https://api.github.com/repos/notnil/chess/issues/28","id":447995485,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0Nzk5NTQ4NQ==","user":{"login":"notnil","id":1387747,"node_id":"MDQ6VXNlcjEzODc3NDc=","avatar_url":"https://avatars1.githubusercontent.com/u/1387747?v=4","gravatar_id":"","url":"https://api.github.com/users/notnil","html_url":"https://github.com/notnil","followers_url":"https://api.github.com/users/notnil/followers","following_url":"https://api.github.com/users/notnil/following{/other_user}","gists_url":"https://api.github.com/users/notnil/gists{/gist_id}","starred_url":"https://api.github.com/users/notnil/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/notnil/subscriptions","organizations_url":"https://api.github.com/users/notnil/orgs","repos_url":"https://api.github.com/users/notnil/repos","events_url":"https://api.github.com/users/notnil/events{/privacy}","received_events_url":"https://api.github.com/users/notnil/received_events","type":"User","site_admin":false},"created_at":"2018-12-17T20:55:20Z","updated_at":"2018-12-17T20:55:20Z","author_association":"OWNER","body":"Love it.  Ill take a look at it this weekend.  @Kerrigan29a if you want to take a stab to compare benchmarks Ill review before then.  Also the CPU profiler might be useful.  "}}
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