> "=>" means comparison In what language? Did you mean ">=" or "<="? They mean the exact same thing in Haskell. > "|" means an OR It also means the same thin

> "=>" means comparison In what language? Did you mean ">=" or "<="? They mean the exact same thing in Haskell. > "|" means an OR It also means the same thing in Haskell. data Maybe a = Nothing | Just a "data of type `Maybe a` is either `Nothing` OR `Just a`." max a b | a > b = a | otherwise = b "max of a and b is either a when a > b OR b otherwise." odd x || x >= 5 "x is odd OR x is greater than or equal to 5" A cool thing about Haskell is that it lets you define new operators. In the parsec package, you get the operator <|>, which keeps the meaning of OR but works with parsers. csvCell = csvQuotedCell <|> csvNonQuotedCell "a CSV cell is either a quoted cell OR a non-quoted cell". > I'm cringed to see $s and \s in a program code that makes it look like LaTeX I don't think they're so common that the comparison is valid. $s implies Template Haskell, which should be used sparingly. \s implies lambdas, which are nowhere near as common as the use of backslashes in LaTex. > I also prefer the boundary of terms and expressions to be consistently marked up with parenthesis. The way you wrote this, makes me think you prefer to write 2 + 5 * 2 as 2 + (5 * 2). You can do that, just like in any other language. I don't think it's common to add parenthesis redundantly in any language though. If you actually meant something like preferring f x y to be written as f(x, y), it's not just a matter of taste. It's so the syntax makes sense with partial application. You can do f x y = ... g = f x h = g y and it would be more confusing to write f(x, y) = ... g = f(x) h = g(y)