Swift3 - 如何将UnsafeMutableBufferPointer <cchar>转换为UnsafeMutablePointer <utsname>

Question

我正在将Swift 2.x项目迁移到Swift 3。

我在使用Swift 3语法将UnsafeMutableBufferPointer<CChar>转换为UnsafeMutablePointer<utsname>时遇到问题。

Swift 2.x ：

(ptr: inout UnsafeMutableBufferPointer<CChar>) -> DeviceTypes in
        uname(UnsafeMutablePointer<utsname>(ptr.baseAddress))

Answer 1

斯威夫特3：

(ptr: inout UnsafeMutableBufferPointer<CChar>) -> DeviceTypes in

        guard let pointer = ptr.baseAddress?.withMemoryRebound(to: utsname.self, capacity: 1, { ptr in
            return ptr
        }) else {
            return DeviceTypes.unrecognized
        }
        uname(pointer)