5.1 Module Syntax

Erlang code is divided into modules. A module consists of a sequence of attributes and function declarations, each terminated by period (.).

Example:

-module(m).          % module attribute
-export([fact/1]).   % module attribute
 
fact(N) when N>0 ->  % beginning of function declaration
    N * fact(N-1);   %  |
fact(0) ->           %  |
    1.               % end of function declaration

For a description of function declarations, see Function Declaration Syntax.