[Haskell-cafe] What is the meaning of tilde ("~") symbol

Stephen Tetley stephen.tetley at gmail.com
Sun Feb 14 17:22:09 EST 2010

On 14 February 2010 22:11, Evan Laforge <qdunkan at gmail.com> wrote:

> There's still no consensus on typeclasses for collections, so these
> are all separate functions.  Has anyone taken a shot at a set of
> AT-using classes for the standard collections?

The standard collections have different shapes depending on what they
represent (maps, trees, lists, sequences) so considering Functor,
Traversable, Foldable perhaps the common operations are largely
already covered. A unifying 'collection' class might be as problematic
as good old Num is for numbers...

Best wishes


More information about the Haskell-Cafe mailing list