On 11 October 2005 17:16, Lajos Nagy wrote:
> While working on a toy compiler I realized that Data.Set.Set (Set) is
> not an instance of the Functor class. In other words: 'fmap' is not
> defined on it. I tried various ways of defining an instance but I
> failed. The reason is quite interesting
Lajos Nagy <[EMAIL PROTECTED]> writes:
> On the other hand, it seems intuitively natural to make Set an
> instance of fmap.
Indeed. While I generally like the overloaded, qualified names, I
find it annoying when, like 'map', they clash with Prelude imports.
Which means that, in a module using D
On Tuesday 11 October 2005 18:16, Lajos Nagy wrote:
> While working on a toy compiler I realized that Data.Set.Set (Set) is
> not an instance of the Functor class. In other words: 'fmap' is not
> defined on it. I tried various ways of defining an instance but I
> failed. The reason is quite inte
Hi,
While working on a toy compiler I realized that Data.Set.Set (Set) is not
an instance of the Functor class. In other words: 'fmap' is not defined
on it. I tried various ways of defining an instance but I failed. The
reason is quite interesting: Set is a type constructor (* -> *) so it
