Reid Barton questions

Reid Barton answers

• Compile error with type families, GADTs and named records
• Cabal fails to install dependencies, but can install them if asked directly
• String substitution operators with lists in Haskell
• Are all Monad instances in Haskell just different ways for mapping from Hask to Hask?
• Why is my Miller Rabin algorithm not working (Haskell)?
• Haskell - wildcard use on right side of guard in patterns
• Why are type instances (a->a) and (a->a->a) conflicting in GHC 7.8?
• Store and retrieve an object of some typeclass - is it possible? If yes, how?
• How do I create a Storable instance for this type?
• Trouble importing a C function into Haskell