1 May
2010
1 May
'10
2:53 a.m.
Jason Dagit
On Fri, Apr 30, 2010 at 11:08 PM, Ivan Lazar Miljenovic < ivan.miljenovic@gmail.com> wrote:
You're putting the constraint in the wrong places: put the "(Cls a) => " in the actual functions where you need it.
That's solid advice in general, but it's still not going to work here if any of the functions needed for the instance of Graph require the type class constraint.
The Graph class doesn't care what the labels are, so it should matter about the constraint. -- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com