Spawn an Actor and request a reply

Canonical source: protos/examples/concurrency/actor-request-reply.protos at locked revision e99b712ecf658a527b1fe82c8beba2c1286d8dc9.

This executable example is rendered from the exact Protos source consumed by the website. Its program body is copied without modification.

/*
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 */

// The shipped std:collections/Set module is also a valid Actor bootstrap module:
// its `call` binding returns a Map behavior object.
worker: Actor.spawn("std:collections/Set", "call", "Ada", "Grace")
print(worker.request("size").value())
worker.stop()

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