迈腾大队长

iPhone X safeArea self.view.mas_safeAreaLayoutGuide crash

6

### New Issue Checklist 🚫 If this template is not filled out your issue **will** be closed with no comment. 🚫 * [x] I have looked at the [Documentation](https://github.com/SnapKit/Masonry/blob/master/README.md) *...

[计算题][第二题]交换两个变量 不太对

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``` c int a = 5; int b = 10; ``` 正解应该是 ``` c a ^= b; b ^= a; a ^=b; ``` 考察的是按位异或操作的原理

hi boy compile failed the demo not work please check it repush to release a good version

iOS STD 抽象类 虚函数没有实现 导致 demo编译不过

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``` sh /Users/sunyazhou/Downloads/mars/samples/iOS/iOSDemo/PublicComponentV2/stn_callback.mm:30:25: error: allocating an object of abstract class type 'mars::stn::StnCallBack' instance_ = new StnCallBack(); ^ In file included from /Users/sunyazhou/Downloads/mars/samples/iOS/iOSDemo/PublicComponentV2/stn_callback.mm:15: In file included from /Users/sunyazhou/Downloads/mars/samples/iOS/iOSDemo/PublicComponentV2/stn_callback.h:24: /Users/sunyazhou/Downloads/mars/samples/iOS/iOSDemo/mars.framework/Headers/stn/stn_logic.h:58:22: note: unimplemented...