{"action":"created","issue":{"url":"https://api.github.com/repos/wyvernlang/wyvern/issues/69","repository_url":"https://api.github.com/repos/wyvernlang/wyvern","labels_url":"https://api.github.com/repos/wyvernlang/wyvern/issues/69/labels{/name}","comments_url":"https://api.github.com/repos/wyvernlang/wyvern/issues/69/comments","events_url":"https://api.github.com/repos/wyvernlang/wyvern/issues/69/events","html_url":"https://github.com/wyvernlang/wyvern/issues/69","id":133453939,"number":69,"title":"safe for space","user":{"login":"JonathanAldrich","id":2341533,"avatar_url":"https://avatars.githubusercontent.com/u/2341533?v=3","gravatar_id":"","url":"https://api.github.com/users/JonathanAldrich","html_url":"https://github.com/JonathanAldrich","followers_url":"https://api.github.com/users/JonathanAldrich/followers","following_url":"https://api.github.com/users/JonathanAldrich/following{/other_user}","gists_url":"https://api.github.com/users/JonathanAldrich/gists{/gist_id}","starred_url":"https://api.github.com/users/JonathanAldrich/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JonathanAldrich/subscriptions","organizations_url":"https://api.github.com/users/JonathanAldrich/orgs","repos_url":"https://api.github.com/users/JonathanAldrich/repos","events_url":"https://api.github.com/users/JonathanAldrich/events{/privacy}","received_events_url":"https://api.github.com/users/JonathanAldrich/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2016-02-13T17:55:23Z","updated_at":"2016-02-16T03:45:39Z","closed_at":null,"body":"Make the interpreter safe for space (see Felleisen and Flatt, Programming Languages and Lambda Calculi, for one explanation of this) by revising the code that captures environments in a closure to only capture variables that are free.  It's probably best to discuss this with me briefly before beginning implementation.\r\n\r\nThis is low-priority for now, just because the interpreter isn't mature enough to run programs where this matters."},"comment":{"url":"https://api.github.com/repos/wyvernlang/wyvern/issues/comments/184503405","html_url":"https://github.com/wyvernlang/wyvern/issues/69#issuecomment-184503405","issue_url":"https://api.github.com/repos/wyvernlang/wyvern/issues/69","id":184503405,"user":{"login":"JonathanAldrich","id":2341533,"avatar_url":"https://avatars.githubusercontent.com/u/2341533?v=3","gravatar_id":"","url":"https://api.github.com/users/JonathanAldrich","html_url":"https://github.com/JonathanAldrich","followers_url":"https://api.github.com/users/JonathanAldrich/followers","following_url":"https://api.github.com/users/JonathanAldrich/following{/other_user}","gists_url":"https://api.github.com/users/JonathanAldrich/gists{/gist_id}","starred_url":"https://api.github.com/users/JonathanAldrich/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JonathanAldrich/subscriptions","organizations_url":"https://api.github.com/users/JonathanAldrich/orgs","repos_url":"https://api.github.com/users/JonathanAldrich/repos","events_url":"https://api.github.com/users/JonathanAldrich/events{/privacy}","received_events_url":"https://api.github.com/users/JonathanAldrich/received_events","type":"User","site_admin":false},"created_at":"2016-02-16T03:45:39Z","updated_at":"2016-02-16T03:45:39Z","body":"Ok, sounds good.  One first step that I think would be useful is to write a function that computes the free variables of an object.  That function probably needs to be a method of all expressions.\r\n\r\nJonathan\r\n"}}