这是一个创建于 4700 天前的主题，其中的信息可能已经有所发展或是发生改变。
Is this statement true or false?
The composition of two Functors is also a Functor.
If false, give a counterexample; if true, prove it by exhibiting some appropriate Haskell code.
链接： http://www.haskell.org/haskellwiki/Typeclassopedia#Instances 习题5
The composition of two Functors is also a Functor.
If false, give a counterexample; if true, prove it by exhibiting some appropriate Haskell code.
链接： http://www.haskell.org/haskellwiki/Typeclassopedia#Instances 习题5
目前尚无回复
Select Language