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All rights reserved.\n+//\n+\n+import UIKit\n+import BitWatchKit\n+\n+public class HomeView: UIView {\n+    var height: CGFloat!","path":"BitWatch/HomeView.swift","position":13,"original_position":13,"commit_id":"529fb3bb109f1328dd221f0a935245c32e853f44","original_commit_id":"529fb3bb109f1328dd221f0a935245c32e853f44","user":{"login":"SeanDunford","id":1704718,"avatar_url":"https://avatars.githubusercontent.com/u/1704718?v=3","gravatar_id":"","url":"https://api.github.com/users/SeanDunford","html_url":"https://github.com/SeanDunford","followers_url":"https://api.github.com/users/SeanDunford/followers","following_url":"https://api.github.com/users/SeanDunford/following{/other_user}","gists_url":"https://api.github.com/users/SeanDunford/gists{/gist_id}","starred_url":"https://api.github.com/users/SeanDunford/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SeanDunford/subscriptions","organizations_url":"https://api.github.com/users/SeanDunford/orgs","repos_url":"https://api.github.com/users/SeanDunford/repos","events_url":"https://api.github.com/users/SeanDunford/events{/privacy}","received_events_url":"https://api.github.com/users/SeanDunford/received_events","type":"User","site_admin":false},"body":"I'm not clear on the ! and ? difference they both indicate optional vars but not sure of the exact difference. 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