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Erlang / Processes

Receive timeout

Learn Receive timeout in Erlang through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.

12 min read • Intermediate

Receive timeout is a focused Erlang lesson inside Processes. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.

Trace the example from its inputs through Receive timeout and identify the behavior that would change if that construct were removed or replaced. Pay attention to the language-specific rules shown by the syntax, because neighboring lessons intentionally exercise different mechanisms.

Topic-specific example

erlang-0035-e95d2128a6.erl
erlang Try It Live 
-module(example).
-export([run/0]).
run() ->
    Parent = self(),
    spawn(fun() -> Parent ! {done, 42} end),
    receive {done, V} -> io:format("~p~n", [V]) after 1000 -> timeout end.
% Distinct check: erlang:length([a,b,c]).
Edge case / engineering note

For Receive timeout, test one realistic boundary: empty data, invalid input, unavailable resources, lifetime/cleanup, type constraints, or concurrency timing where applicable. A successful happy path is not enough to prove the construct is used correctly.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

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