17 Jan
2010
17 Jan
'10
5:10 a.m.
let ... in ... I guess GHC is finding where "in" is. 在 2010年 1月 17日 星期日 18:05:47，Andrew Coppin 寫道:
Is there a specific reason why GHC consistently refuses to accept the following perfectly reasonable code snippet?
main = do putStrLn "Line 1" putStrLn "Line 2"
let xs = do x <- [1..10] y <- [1..10] return (x+y)
print xs
No matter which way I rearrange this, it *insists* that there's a parse error. This is very frustrating, given that it's utterly clear what I want...
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