On 22 November 2010 07:48, Magicloud Magiclouds
<magicloud.magiclouds@gmail.com> wrote:
Hi,
For example, I have a data A defined. Then I want to add (+) and (-)
operators to it, as a sugar (compared to addA/minusA). But * or other
stuff defined in class Num is meanless to A. So I just do:
(+) :: A -> A -> A
(+) a b =
A (elem1 a + elem1 b) (elem2 a + elem2 b) -- I got errors here, for
the (+) is ambiguous.
So, just wondering, does this way work in Haskell?
--
竹密岂妨流水过
山高哪阻野云飞
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