Pattern Matching - language feature

Example from 1 languages: Haskell

fib 0 = 1
fib 1 = 1
fib n | n >= 2
      = fib (n-1) + fib (n-2)

Example from 1 languages: Elixir

def fib(0), do: 1
def fib(1), do: 1
def fib(n) when n >= 2, do: fib(n-1) + fib(n-2)

Example from 1 languages: Coconut

match [head] + tail in [0, 1, 2, 3]:
   print(head, tail)

Example from 1 languages: Felix

match x with
 | Some x => println$ x;
 | None => println "NONE";
 endmatch;

Example from 1 languages: Aardvark

This functionality is included in switch statements.

Languages with Pattern Matching include Rust, Haskell, Elixir, Coconut, Felix, Egison, HOPE, Aardvark, NPL

Languages without Pattern Matching include progsbase

View all concepts with or missing a hasPatternMatching measurement

Read more about Pattern Matching on the web: 1.