{"action":"opened","issue":{"url":"https://api.github.com/repos/adobe/htl-spec/issues/70","repository_url":"https://api.github.com/repos/adobe/htl-spec","labels_url":"https://api.github.com/repos/adobe/htl-spec/issues/70/labels{/name}","comments_url":"https://api.github.com/repos/adobe/htl-spec/issues/70/comments","events_url":"https://api.github.com/repos/adobe/htl-spec/issues/70/events","html_url":"https://github.com/adobe/htl-spec/issues/70","id":383620572,"node_id":"MDU6SXNzdWUzODM2MjA1NzI=","number":70,"title":"The 'in' operator question","user":{"login":"karollewandowski","id":1154140,"node_id":"MDQ6VXNlcjExNTQxNDA=","avatar_url":"https://avatars2.githubusercontent.com/u/1154140?v=4","gravatar_id":"","url":"https://api.github.com/users/karollewandowski","html_url":"https://github.com/karollewandowski","followers_url":"https://api.github.com/users/karollewandowski/followers","following_url":"https://api.github.com/users/karollewandowski/following{/other_user}","gists_url":"https://api.github.com/users/karollewandowski/gists{/gist_id}","starred_url":"https://api.github.com/users/karollewandowski/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/karollewandowski/subscriptions","organizations_url":"https://api.github.com/users/karollewandowski/orgs","repos_url":"https://api.github.com/users/karollewandowski/repos","events_url":"https://api.github.com/users/karollewandowski/events{/privacy}","received_events_url":"https://api.github.com/users/karollewandowski/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-11-22T17:34:56Z","updated_at":"2018-11-22T17:34:56Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"The `in` relational operation is defined as:\r\n```\r\ninBinaryOp = comparisonOp {, 'in', comparisonOp};\r\n```\r\nIt allows creating expressions like:\r\n```\r\n${value1 in value2 in value3 in value4 in value5}\r\n```\r\nWhat doesn't make much practical sense as `in` operation results in boolean. Is it on purpose and I'm missing some practical usages or it should be:\r\n```\r\ninBinaryOp = comparisonOp\r\n           | comparisonOp, 'in', comparisonOp;\r\n```\r\n?"}}
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