这段代码过去很好(在编译器没有抱怨的意义上):
extension OutputStream {
func write(_ data: Data) -> Int {
return data.withUnsafeBytes { pointer in
return self.write(pointer, maxLength: data.count)
}
}
}
从Swift 5.0开始,这会产生一个警告:
警告:不推荐使用'withUnsafeBytes':改用
withUnsafeBytes<R>(_: (UnsafeRawBufferPointer) throws -> R) rethrows -> R
我尝试使用所提出的方法,但我似乎无法将UnsafeRawBufferPointer
与UnsafePointer<UInt8>
最终需要的OutputStream.write
争论。
如何以非弃用的方式编写此函数?
诀窍是使用bindMemory
函数:
func write(_ data: Data) -> Int {
return data.withUnsafeBytes({ (rawBufferPointer: UnsafeRawBufferPointer) -> Int in
let bufferPointer = rawBufferPointer.bindMemory(to: UInt8.self)
return self.write(bufferPointer.baseAddress!, maxLength: data.count)
})
}
虽然这适用于Swift 5.0,但显然存在一些问题;见a related forum discussion。