Re: [very beginner] function

Hi,

You can give a name to your function:

let f = function x -> x*x;;

f 5;;
- : int = 25

For function definitions, it is better to use the keyword "fun" instead of
"function".
"function" is used to do pattern matching on the argument of the function.

You can write f this way:

let f x  = x*x

or

let f = fun x -> x*x


For more details, you can read this page that explain the basics regarding
functions: http://ocaml.org/learn/tutorials/basics.html


Cheers,

Esther Baruk

On Mon, Nov 3, 2014 at 5:15 PM, [email protected] [ocaml_beginners] <
[email protected]> wrote:

>
>
> I understand this
>
> # function x -> x*x ;;
>
> But don't understand this
>
> # (function x -> x * x) 5 ;;
>
> It is a call of the function? Why do I have to put the complete
> function-definition again there?
> Isn't there a simpler way? Something like
>
> # x (5) ;;
> - : int = 25
>  
>