{"action":"opened","issue":{"url":"https://api.github.com/repos/snu-sf/pl2015/issues/120","labels_url":"https://api.github.com/repos/snu-sf/pl2015/issues/120/labels{/name}","comments_url":"https://api.github.com/repos/snu-sf/pl2015/issues/120/comments","events_url":"https://api.github.com/repos/snu-sf/pl2015/issues/120/events","html_url":"https://github.com/snu-sf/pl2015/issues/120","id":79749241,"number":120,"title":"\"True\" assertion in hoare triples","user":{"login":"AdamBJ","id":8980400,"avatar_url":"https://avatars.githubusercontent.com/u/8980400?v=3","gravatar_id":"","url":"https://api.github.com/users/AdamBJ","html_url":"https://github.com/AdamBJ","followers_url":"https://api.github.com/users/AdamBJ/followers","following_url":"https://api.github.com/users/AdamBJ/following{/other_user}","gists_url":"https://api.github.com/users/AdamBJ/gists{/gist_id}","starred_url":"https://api.github.com/users/AdamBJ/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AdamBJ/subscriptions","organizations_url":"https://api.github.com/users/AdamBJ/orgs","repos_url":"https://api.github.com/users/AdamBJ/repos","events_url":"https://api.github.com/users/AdamBJ/events{/privacy}","received_events_url":"https://api.github.com/users/AdamBJ/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-23T06:21:15Z","updated_at":"2015-05-23T06:21:15Z","closed_at":null,"body":"For question 3 we're asked to find an ```a``` such that ```{ fun st => True }} X ::= a {{ fun st => st X = aeval st a}``` doesn't hold. Before getting to that part of the question though I want to understand exactly what ```fun st => True``` means. I know that it represents an assertion that holds before the assignment operation is applied, but what does it tell us? I can understand assertions like ```fun st => X = 3```: before the assignment operation the variables X has 3 stored inside it. Bur for ```fun st => True```, what is true exactly? What does this assertion tell us about the state?"}}