Haskell do notation is defined as an eleven-line macro in rascal/monad, and GHC’s useful LambdaCase extension is also possible to implement without modifying Rascal at all.

'Simple syntactic transformations are, of course, trivially defined as macros. You'll see that there is some serious value in Lisp-style programming that's only now being experimentally adapted to Haskell-style type systems (building on very recent research). Take a look at this recent article about 'Rascal', an attempt to combine Lisp-like macros with Haskell-like types and semantics.

To poking at corpses, the continuously running Scheme interpreterīuilding your entire program without ever having to restart it is a powerful development model, and to have the workflow well integrated with Emacs (the only editor for Lisp as far as I'm concerned) yields a programming experience like no other. Geiser is thus my humbleĬontribution to the dynamic school of expression, and a reactionĪgainst what i perceive as a derailment, in modern times, of standard It's from the home page of an Emacs extension for Scheme programming: The following quote is about Scheme, not Common Lisp, but I think it illustrates the philosophical difference between dynamic languages and static languages. Embrace Lisp's dynamic nature and many interesting things are possible. Also note that Lisp is a multi-paradigm language, not a functional one, so you can explore more ways to design programs. > (macroexpand-1 '(defun-curried foo (x y z) (+ x y z))) In case anyone is wondering how this works, here's the expansion of FOO: Okay, I will admit, the 'funcall' thing is annoying. Handling &OPTIONAL, &KEY, and &REST in the original parameter list is left as an exercise for the reader :-)

(apply #',name #'first (reverse (cdr nps))) (do () ((not (and (listp (car body)) (eq (caar body) 'declare)))) (let ((new-params (mapcar (lambda (p) (list p nil (gensym))) (error 'DEFUN-CURRIED does not yet handle &OPTIONAL, &KEY, or &REST'))) (defmacro defun-curried (name param-list &body body)

Ruby zip cpgz