5 ms·

It's because Haskell's type system at least helps you avoid getting the line noise wrong. If you have to refactor some complicated line noise then the compiler

• dmitriid 7y ago
  What would an error look like if I misused $ or &? And yes, compilers hold a user’s hand in most languages (including PHP with type hints :) ).
  • lalaithion 7y ago
    • Couldn't match expected type ‘([Integer] -> [Integer]) -> [b]’ with actual type ‘[Integer]’ • Possible cause: ‘map’ is applied to too many arguments In the second argument of ‘(&)’, namely ‘map (* 2) [1, 2, 3]’ In the second argument of ‘($)’, namely ‘map (+ 2) & map (* 2) [1, 2, 3]’ In the expression: map (+ 2) $ map (+ 2) & map (* 2) [1, 2, 3]
    • dmitriid 7y ago
      In my opinion this doesn’t help much.
      • mbrodersen 7y ago
        Of course not. You have to learn how the type system works to get it.