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elbrujohalcon/dumb_math.erl

Created May 18, 2016 16:07
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For my post @ Medium
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dumb_math.erl
-module(dumb_math).
-export([dup/1, init/1]).
dup(X) ->
case gen_server:start_link(dumb_math, X, []) of
{ok, Pid} -> sys:get_state(Pid);
{error, Reason} -> Reason
end.
init(X) when is_number(X) -> {ok, X * 2};
init(_) -> {stop, notnum}.
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