[Haskell-beginners] Parse error in pattern

[Zhi-Qiang Lei]

What an idiot am I! Thank you very much.

On Jan 8, 2012, at 12:49 AM, Brent Yorgey wrote:

> On Sun, Jan 08, 2012 at 12:11:29AM +0800, Zhi-Qiang Lei wrote:
>> 
>> scan :: [Point a] -> [Point a]
>> scan p1 : p2 : p3 : xs
> 
> Patterns with constructors and multiple components must be surrounded
> by parentheses.  So this should be
> 
>  scan (p1 : p2 : p3 : xs)
> 
> -Brent
> 
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Best regards,
Zhi-Qiang Lei
zhiqiang.lei at gmail.com