Haskell uses a lazy evaluation system which ... and those based on the built in scanl function (for the list comprehension examples, you’ll need to give ghci the -fglasgow-exts command line ...

In Lisp, you can do this with macros, but macros dont work the same way as ordinary functions. While Haskell is not object-oriented, it has good support for abstraction, e.g. type classes and ...

Don’t import any Haskell modules. Use only the functions from the standard prelude. You can write helper functions as long as they use only standard prelude functions. The one exception is QuickTest: ...