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Rembane/msgorder.erl

Created May 13, 2015 14:37
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How to get messages in correct order, with interference.
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msgorder.erl
-module(msgorder).
-compile(export_all).
% How to get messages in correct order, even though things outside of our
% control try to put them in a semi-random order.
f(T, X) ->
Parent = self(),
Ref = make_ref(),
spawn_link(fun() -> timer:send_after(T, Parent, {Ref, {T, X}}) end),
receive {Ref, Y} -> Y end.
test() ->
lists:map(fun (X) -> f(random:uniform(10)*100, X) end, lists:seq(1,10)).
@elbrujohalcon
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why spawn_link and timer:send_after? You could've just done:

f(T, X) ->
    erlang:send_after(T, self(), {Ref, {T, X}}),
    receive {Ref, Y} -> Y end.

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