Erlang Programming

[Dark Agent]

Morning,

I battling for 2 hours and over. I want to create a module with 2 functions and 2 function overloaded.

The following works for one function

-module(boolean).
-export([b_not/1]).

b_not(true) -> false;
b_not(false) -> true.

This not working

-module(boolean).
-export([b_and/1,b_and/2,b_not/1]).

b_not(true) -> false;
b_not(false) -> true;
b_and(true,true) -> true;
b_and(Other) -> false.

I get the following errors.

boolean.erl:6: head mismatch
boolean.erl:2: function b_and/1 undefined
boolean.erl:2: function b_and/2 undefined
boolean.erl:2: function b_not/1 undefined

Any clue how to approach it or fix it.
I tried tricks like export separate but more errors.
Thanks in advance

 

[Dark Agent]

I figured it out,

; is use for overloading with the same arity(parameters)

-module(boolean).
-export([b_and/2,b_not/1,b_and/1]).

b_not(true) -> false;
b_not(false) -> true.
b_and(true,true) -> true.
b_and(Other) -> false .

Thanks

 

[spiderz]

Pleasure being of help!