Line wrapping:
Use a pair of \

! A func of spec-chars only - considered an infix operator by default (need to surround by parenthesis) !
Function can be defined using backticks:

a `fun` b = ...


Let bindings:

let a = 100; b = 200 in a*b

cylinder r h = 
  let sideArea = 2 * pi * r * h
      topArea = pi * r ^ 2
  in sideArea * topArea

[let square = x * x in (square 5, square 3, square 2)]
> [(25, 9, 4)]

calcBmi xs = [bmi | (w, h) <- xs, let bmi = w / h ^ 2, bmi >= 25.0]


Interesting operators:

(,) - pair operator {{{ unit x g = (x,g) --could be-- unit = (,) }}}
(,) :: a -> b -> (a,b),    (,,) - triple operator
. - func composition
'op' - infix operator
[0..] - infinit list
(!!) :: [a] -> Int -> a // select n-th element of the list
(:) - add an element to the list
(++) - append 2 lists