6 Nov
2003
6 Nov
'03
4:04 p.m.
On Thu, Nov 06, 2003 at 10:02:26PM +0100, Tomasz Zielonka wrote:
GHC complains with:
Unbound implicit parameter (?req :: Request) arising from use of `controller1' In the list element: controller1 In the definition of `controllerList': controllerList = [controller1, controller2]
You have just been bitten by monomorphism restriction. Write a type signature for controllerList and it should work:
controllerList :: (?req :: Request) => [String]
Maybe in such situation GHC could suggest that the problem can be caused by monomorphism restriction ? Best regards, Tom -- .signature: Too many levels of symbolic links