chi questions

chi answers

• Make constrained functions a typeclass instance
• Is there an accurate way in Haskell to encode tuple of Foo, where some certain combinations are forbidden?
• Specifying a dependent type via type family in a GADT data constructor
• Why do some function calls fail to work without a type application?
• How to write Traversal for GADT?
• Check if function returned an error in Haskell
• Multiplying Int and double values in esqueleto?
• Return smallest even number from 3 arguments or largest uneven number if there are no even numbers
• Same LHS, different RHS in Haskell
• Why foldr works on infinity list?