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Auto Layout leading and trailing attributes and RTL
When you use the Auto Layout leading and trailing attributes (not the right and left attributes), most of the user interface appears mirrored in right-to-left languages.
Swift weak 与 unowned
在用 Swift 做开发时，我们可以使用 weak 或是 unowned 打破类实例和闭包的强引用循环。我们来看下 weak 和 unowned 的相同和不同之处。
iOS 内存占用修复小记
Xcode 切换 Swift 版本和小版本
this SDK is not supported by the compiler (the SDK is built with 'Apple Swift version 5.5.2 (swiftlang-1300.0.47.5 clang-1300.0.29.30)', while this compiler is 'Apple Swift version 5.7.1 (swiftlang-5.7.1.135.3 clang-1400.0.29.51)'). Please select a toolchain which matches the SDK.