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set t to typeName(mf)
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if "(a -> b)" = t then
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apFn(mf, mx)
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else if "Either" = t then
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apLR(mf, mx)
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else if "Maybe" = t then
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apMay(mf, mx)
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else if "Node" = t then
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apTree(mf, mx)
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else if "Tuple" = t then
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apTuple(mf, mx)
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end ap
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on apFn(f, g)
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property mf : |λ| of mReturn(f)
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property mg : |λ| of mReturn(g)
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mf(x, mg(x))
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end apFn
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on apLR(flr, lr)
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if missing value is |Left| of flr then
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if missing value is |Left| of lr then
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|Right|(|λ|(|Right| of lr) of mReturn(|Right| of flr))
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lr
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flr
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end apLR
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on apList(fs, xs)
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property mop : mReturn(op)
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property mf : mReturn(f)
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property mg : mReturn(g)
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|λ|(|λ|(x) of mf, |λ|(x) of mg) of mop
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end liftA2Fn
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on liftA2LR(f, a, b)
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set x to |Right| of a
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if class of b is list then
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set y to {}
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set y to |Right| of b
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if x is missing value then
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a
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else if y is missing value then
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b
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|Right|(|λ|(x, y) of mReturn(f))
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end liftA2LR
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on liftA2List(f, xs, ys)
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property g : mReturn(f)'s |λ|
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on |λ|(y)
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{g(x, y)}
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concatMap(result, ys)
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concatMap(result, xs)
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end liftA2List
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on liftA2May(f, a, b)
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if Nothing of a then
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else if Nothing of b then
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Just(|λ|(Just of a, Just of b) of mReturn(f))
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end liftA2May
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on liftA2Tree(f, tx, ty)
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script fx
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mReturn(f)'s |λ|(root of tx, y)
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script fmapT
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on |λ|(t)
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fmapTree(fx, t)
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script liftA2T
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liftA2Tree(f, t, ty)
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if class of ty is list then
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set rootLabel to {}
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set forest to {}
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set rootLabel to root of ty
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set forest to map(fmapT, nest of ty) & map(liftA2T, nest of tx)
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Node(mReturn(f)'s |λ|(root of tx, rootLabel), forest)
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end liftA2Tree
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on liftA2Tuple(f, a, b)
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set b1 to {}
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set b2 to {}
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set b1 to |1| of b
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set b2 to |2| of b
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Tuple(mappend(|1| of a, b1), mReturn(f)'s |λ|(|2| of a, b2))
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end liftA2Tuple
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on |lines|(xs)
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paragraphs of xs
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end |lines|
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on |list|(gen)
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set x to |λ|() of gen
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repeat while missing value ≠ x
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set end of xs to x
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return xs
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end |list|
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on listDirectory(strPath)
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unwrap(ca's NSFileManager's defaultManager()'s ¬
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contentsOfDirectoryAtPath:(unwrap(stringByStandardizingPath of ¬
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wrap(strPath))) |error|:(missing value))
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end listDirectory
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on listFromMaybe(mb)
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{Just of mb}
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end maybeToList
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on listFromTree(tree)
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{root of x} & concatMap(go, nest of x)
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end listFromTree
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on listFromTuple(tpl)
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items 2 thru -2 of (tpl as list)
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end listFromTuple
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on listToMaybe(xs)
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if xs ≠ {} then
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