> > > data _E a = _E a
> >
> > Yes, that seems about right. BTW, why is it called "_E"?
>
> The 1 element tuple (which is what this is) has no syntax in Haskell.
> It has many names all over the place
And more specifically,
(a) the leading underscore in _E means it is not a legal Haskell'98
type or data constructor, so cannot clash with any user-defined
constructor;
(b) the E stands for "evaluate", which is rather unintuitive since
the constructor means _don't_ evaluate, but you can blame me for
that thinko.
Regards,
Malcolm
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