first-steps
    1-hellows
        fact-to-compile.hs
        fact.hs
        hello-on-fly.hs
    1b-input-output
        forM.hs
        io-with-when-and-do.hs
        short-lines.hs
        show.hs
    2-parallel-computing
        par.hs
    3-misc
        curring.hs
        function-syntax.hs
        misc.hs
        new-type.hs
        parenthesises.hs
        pattern-in-where.hs
        picture.hs
        reals.hs
        recursion-quick-sort.hs
        typeof.hs
        zipWith.hs
    4-aggregating-functions
        map-and.hs
    5-types
        existentials.hs
        tree.hs
        types.hs
    6-classes
        classes.hs
    7-functor
        functor-b.hs
        functor-list.hs
        functor.hs
get-started.txt
help.txt
language-abstract.txt
language-pitfalls.txt
penn-steps
    1-algeb
        2-algeb-constructors.hs
        3-homework-3-sublists-2.hs
        3-homework-3-sublists-3.hs
        3-homework-3-sublists-4.hs
        3-homework-3-sublists-5.hs
        3-homework-3-sublists.hs
        3-homework-4-maximum-1.hs
        3-homework-5-histogram-1.hs
        algeb.hs
        data-type-instantiation-completion--Num-to-Float.hs
    12-monad
        1-monad.hs
    4-high-order
        4-homework-NEED-MORE-ASSIGNMENTS.hs
        4-homework-balanced-tree.hs
        4-homework-composition-Collatz-conjecture.hs
        4-homework-composition-filter.hs
        4-homework-composition.hs
        4-homework-foldl-via-foldr.hs
    6-fibonacci
        Num-Poly-with-operations-sugar
            fibo
            fibo.hs
        fibo.hs
        integer-polynomials-without-lists
            fibo.hs
        problems
            cannot-extend-custom-to-list
                fibo.hs
            cannot-inherit-from-integral.hs
            disaster-class--type--data--fibo.hs
            fibo--cannot-instantiate-Ingegral-for-Polynomial.hs
        unfinished
            based-on-custom-abstract-list
                fibonacci.hs
            creates-parent-class-with-method-plus
                fibo.hs
            integer-poly
                fibo.hs
    6-hanoi-bonus
        hanoi.hs
    7-folds-monoids
        monoids.hs
    9-applicative
        applicative-liftA3.hs
        applicative-sub-shifted-to-list.hs
        applicative.hs