From Compsci.ca Wiki

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

Contents 1 Pattern matching 1.1 Common Lisp (destructuring-bind) 1.2 Erlang 1.3 Haskell 1.4 O'Caml 1.5 SML/NJ 2 Templates/Generics 2.1 C++/D 2.2 Java/Scala 2.3 O'Caml/Haskell 3 Regular expressions 4 Anonymous functions/closures

Pattern matching

Common Lisp (destructuring-bind)

Erlang

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

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

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

Haskell

O'Caml

SML/NJ

Templates/Generics

C++/D

Java/Scala

O'Caml/Haskell

Regular expressions

Anonymous functions/closures