Chris Penner

Chris Penner has asked 11 questions and find answers to 10 problems.

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Chris Penner questions

Recursion schemes using `Fix` on a data-type that's already a Functor?
Function Composition Do Notation
'Share' or 'cache' an expression parameterized by only ambiguous types?
Which Algebraic Pattern fits this type of tree?
Traversal over last element of 'filtered'

Chris Penner answers

Declare type of function in a function
a haskell function to test if an integer appears after another integer
Use Haskell's lenses library to fmap a lens
Why does GHC refuse to allow this existential type function?
Can I build something like a lens when my getter and setter return `Either`?
Recursion schemes using `Fix` on a data-type that's already a Functor?
'Share' or 'cache' an expression parameterized by only ambiguous types?
webpack + babel loader source map references empty file