Haskell的Functor习题

This topic created in 5304 days ago, the information mentioned may be changed or developed.

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

No Comments Yet

true false Haskell