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Revision as of 20:02, 9 July 2006

Ten best programming techniques you're (probably) not using.

Pattern matching

Common Lisp (destructuring-bind)

[1]> (defun foo (a-list)
        (destructuring-bind (a &rest b) a-list
           (list a b)))
FOO
[2]> (foo '(1 2 3 4))
(1 (2 3 4))
[3]>

Erlang

-module(example).
-export(hello/1]).

hello("wtd") ->
    io:format("Hello, ~s!~n", [Name]);

hello(Name) ->
    io:format("Get out!!~n", []).

Haskell

O'Caml

# let rec fact n =
      match n with
          1 -> 1
        | o -> o * fact (o - 1);;

# let rec fact =
      function
          1 -> 1
        | o -> o * fact (o - 1);;

# let fact n =
      let rec fact' n acc =
          match n with
              1 -> acc
            | o -> fact (o - 1) (n * acc)
      in
          fact' n 1;;

SML/NJ

Templates/Generics

C++/D

Java/Scala

O'Caml/Haskell

Regular expressions

Anonymous functions/closures