The reason is that you can define =- as on operator
so for example, in this (obfuscated) code:
(=-) x y = x * y
sq y = y =- y
Thus, in your code, you had an operator on the LHS of the definition,
and the interpreter baulked at it.
Bob
On 27 Sep 2005, at 10:34, [EMAIL PROTECTED] wrote:
Hi
i can not load program test1 into hugs, but test2 works.
Am i missing some special syntax?
greetings,
Philip
-------------- test1 ------------------
foo :: Maybe Int -> Int
foo Nothing =-1
foo (Just a)= a
-------------- test2 ------------------
foo :: Maybe Int -> Int
foo Nothing = -1
-- ^
-- +-- note an extra space
foo (Just a)= a
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