Swift3 - 如何将 UnsafeMutableBufferPointer 转换为 UnsafeMutablePointer

Question

我正在将 Swift 2.x 项目迁移到 Swift 3。

我在转换 UnsafeMutableBufferPointer<CChar> 时遇到问题至 UnsafeMutablePointer<utsname>在 Swift 3 语法中。

swift 2.x:

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

Answer 1

swift 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)