Is the D scope + unrecoverable error different from Go's "defer" and "panic"?
D's scope guard is similar to "defer", but it has three forms: "scope(exit)", "scope(failure)", and "scope(success)". So instead of a deferred function that tests "if r := recover(); r != nil {...}" you just do "scope(failure) {...}"
D's unrecoverable error is just a matter of having an exception hierarchy where "Exception" and "Error" are separate subclasses of "Throwable", and by convention you prefer not to write "catch (Throwable t)" or "catch (Error e)".
Comments
D's scope guard is similar to "defer", but it has three forms: "scope(exit)", "scope(failure)", and "scope(success)". So instead of a deferred function that tests "if r := recover(); r != nil {...}" you just do "scope(failure) {...}"
D's unrecoverable error is just a matter of having an exception hierarchy where "Exception" and "Error" are separate subclasses of "Throwable", and by convention you prefer not to write "catch (Throwable t)" or "catch (Error e)".