28 Apr
2013
28 Apr
'13
1:24 p.m.
Not always. For example, you can't mess with the declaration
of a standard class, such as Num.
On Sun, Apr 28, 2013 at 12:06 PM, Edward Kmett
You can always put those helper functions in the class and then just not export them from the module.
On Sun, Apr 28, 2013 at 10:49 AM, Doug McIlroy
Is there any strong reason why the where clause in an instance declaration cannot declare anything other than class operators? If not, I suggest relaxing the restriction.
It is not unusual for declarations of class operators to refer to special auxiliary functions. Under current rules such functions have to be declared outside the scope in which they are used.
Doug McIlroy