 let yPlaneBuffer = CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 0) yPlaneData.withUnsafeBytes { (data) in yPlaneBuffer!.copyBytes(from: data, count: yPlaneData.count) }

2:11 AM

これコンパイル通るのなんでだろう

2:12 AM

yPlaneData は Data 型で、 withUnsafeBytes は

 public func withUnsafeBytes<ResultType, ContentType>(_ body: (UnsafePointer<ContentType>) throws -> ResultType) rethrows -> ResultType

2:12 AM

で、copyBytes は public func copyBytes(from source: UnsafeRawPointer, count: Int)

2:12 AM

だから

2:12 AM

クロージャの (data) の推論が

2:13 AM

UnsafePointer<ContentType> と UnsafeRawPointer でぶつかって解決できないように思う