kCFURLPreferredIOBlockSizeKey
Key for the optimal block size to use when reading or writing this file’s data, returned as a CFNumber object, or NULL if the preferred size is not available.
Declaration
let kCFURLPreferredIOBlockSizeKey: CFString!See Also
Constants
kCFURLNameKeykCFURLLocalizedNameKeykCFURLPathKeykCFURLIsRegularFileKeykCFURLIsDirectoryKeykCFURLIsSymbolicLinkKeykCFURLIsVolumeKeykCFURLIsPackageKeykCFURLIsSystemImmutableKeykCFURLIsUserImmutableKeykCFURLIsHiddenKeykCFURLHasHiddenExtensionKeykCFURLCreationDateKeykCFURLContentAccessDateKeykCFURLContentModificationDateKey