Languages with juxtaposed argument application (Haskell, OCaml) and meaningful indentation (Python, Haskell) will win over Lisp. Mixfix-based languages like Agd

Languages with juxtaposed argument application (Haskell, OCaml) and meaningful indentation (Python, Haskell) will win over Lisp. Mixfix-based languages like Agda2 or Maude will win even more. BTW, while Halstead metric predict various things about imperative languages like Algol/PL/1/C/C++/Java quite well, it fails when applied to Haskell: http://www.cs.stir.ac.uk/~kjt/techreps/pdf/TR141.pdf http://www.cs.stir.ac.uk/~kjt/techreps/pdf/TR141.pdf And fail spectacularly - they have to introduce special "invisible apply" operator to make Haskell to be closer to imperative languages, just to do not look like they are cheating. This is attributed to juxtaposition as application (as it reduces number of lexems) and to definition of functions by pattern matching. I think other languages with those two features would have same effect over predictive force of Halstead metric.