Question

I’m trying a simple F# script that will find pythagoras.

Here’s the code:

open System

let FindHypotenuse a b =
    Math.Sqrt(Math.Pow(a, 2.0) + Math.Pow(b, 2.0))

FindHypotenuse(2.0, 3.0)

Any suggestions?

Answer 1

You’ve defined the function to take two curried arguments, but then called it with a tuple. Either call it as

FindHypotenuse 2.0 3.0  // no commas

or redefine it to take a tuple

let FindHypotenuse(a,b) = ...

Note that “'a * 'b” is the name of a tuple type. See also:

http://lorgonblog.wordpress.com/2008/04/03/f-function-types-fun-with-tuples-and-currying/