更合理的instance Monad []
使
join $ map (\y->map (\x->(x,y)) [1..]) [1..]
的结果更合理: https://github.com/zaoqi/zaoqilc/blob/master/featuring/MonadList.hs
Trac metadata
Trac field | Value |
---|---|
Version | 8.0.1 |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Core Libraries |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |