A set of additions to
URLError which provide some handy features:
Errorfrom a POSIX error code or an
Errorrepresents a file not found error, a permissions error, or a cancellation error, regardless of the error's domain.
RecoverableErrorto present recovery options in error dialogs.
URLErrorcontaining any of their supported
CSErrors+Foundationpackage provides some handy Foundation-specific features.
These additions are free for any use under the terms of the MIT license.