[erlang-questions] help with message-passing syntax

[not norwegian swede]

im using:
http://www.erlang.org/doc/reference_manual/part_frame.html
but cant really figure it out. i didnt expect this to work but compiled anyway:
2> c("c:/Program Files/erl5.6.2/usr/serec", [{outdir, "c:/Program Files/erl5.6.2/usr/"}]).
c:/Program Files/erl5.6.2/usr/serec.erl:2: function squarer/1 undefined
c:/Program Files/erl5.6.2/usr/serec.erl:2: function squarer2/1 undefined
c:/Program Files/erl5.6.2/usr/serec.erl:23: premature end
error
3> 


obv this is just a toy program but say I have a function that squares the integers of a list from 1 to the send parameter.
so i want to send a message to that function.


-module(serec).
-export([seq/2,squarer/1,squarer2/1]).
         
seq(Start, End) -> seq(Start, End, []).

seq(Start, End, Acc) when Start =< End ->
   seq(Start, End-1, [End|Acc]);
seq(_, _, Acc) ->
   Acc.

squarer(X) ->
    receive
    Pattern [when Pattern > 7] ->
        [X*X || X <- [seq(1, 7]];
    end

squarer2(X) ->
    receive
    when X > 7 -> [X*X || X <- [seq(1, 7]];
    end

squarer(X) ! 2+6




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