Clean (programming Language) - Examples

Examples

Hello world:

module hello
Start :: {#Char}
Start = "Hello, world!"

Factorial:

module factorial
fac 0 = 1 fac n = n * fac (n-1) // find the factorial of 10 Start = fac 10

Factorial:

module factorial2
import StdEnv fac 0 = 1 fac n = prod //Generate a list that goes from 1 to n and returns the product of the elements // find the factorial of 6 Start = fac 6

Fibonacci sequence:

module fibonacci
fib 0 = 0 fib 1 = 1 fib n = fib (n - 2) + fib (n - 1)
Start = fib 7

Infix operator:

(^) infixr 8 :: Int Int -> Int (^) x 0 = 1 (^) x n = x * x ^ (n-1)

The type declaration states that the function is a right associative infix operator with priority 8: this states that x*x^(n-1) is equivalent to x*(x^(n-1)) as opposed to (x*x)^(n-1); this operator is pre-defined in the Clean standard environment.

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