On Tue, 2009-05-12 at 14:09 +0100, Philippa Cowderoy wrote: > On Mon, 2009-05-11 at 20:43 -0400, Anton van Straaten wrote: > > Serious question: what is the significance of the question mark and > > double question marks in those signatures, or better yet, where can I > > read about it? > > > > I've forgotten where to find the details (try the GHC manual if you > haven't already?), but IIRC they're part of how GHC handles boxing. >
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