20 Sep 2001 12:37:36 -0600, Alastair David Reid <reid@cs.utah.edu> pisze:
Ah, I forgot that you can't export a constructor on its own.
You can't?
I probably knew this once but looking at it now, it seems kinda surprising. Haskell's module system is supposed to be just namespace control --nothing more-- so why is it preventing me from doing something which is perfectly safe and well-defined?
It's ambiguous whether you mention a value constructor or a type constructor / class. They are in separate namespaces and distinguished by context in normal source, but the export list doesn't provide the context. There is a strange exception that you can *hide* value constructors directly. Hiding a name beginning with uppercase applies to all relevant namespaces. -- __("< Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK