xcode8 && swift3.0出现“expression of type UIViewController？is unused ” warning
定制导航返回按钮时，关联的方法中：io
self.navigationController？.popViewController(animated: true)；这句出现警告方法
解决：im
self.navigationController!.popViewController(animated: true)将？改成！animate
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相关文章
- 1. The expression of type Integer is unboxed into int
- 2. unused function warning message
- 3. unused function warning message（转）
- 4. index.js:1375 Warning: A component is changing an uncontrolled input of type che
- 5. The hierarchy of the type is inconsistent
- 6. Python3 tensorflow出现FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated;
- 7. 使用tensorflow出现FutureWarning: Passing (type, 1) or ‘1type‘ as a synonym of type is deprecated警告
- 8. Warning: Failed prop type: Invalid prop value of type number supplied to Textinput, expected string
- 9. warning: #61-D: integer operation result is out of range
- 10. Warning: Failed prop type: Invalid prop `enablesReturnKeyAutomatically` of type `string` supplie