User:Duplode/Haskell exercises brainstorming

• Haskell/Classes and types
  • (tricky) implement a simple Complex data type which is an instance of Num.
• Haskell/Understanding monads/State
  • (bonus) implement a random walk simulation.
• Haskell/Understanding monads/List
  • implement isGrandparent (see the talk page).
• Haskell/Monad transformers
  • Rewrite getValidPassword without using guard.
  • Implement a stop-on-failure shell script wrapper with System.Process and MaybeT.
  • Write an implementation for ErrorT.
  • Combine both kinds of random number generators through the means of StateT/IO
  • Collect the generated positions in the random walk simulation with a WriterT/State (or StateT/Writer) combo.
• Haskell/Hierarchical libraries/Arrays
  • Complete the tic-tac-toe example from the list monad chapter by implementing a Board type with arrays.
• Misc.
  • Write an ironic high-level implementation of a Turing machine.