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Pony prevents you from writing that code. All communication between actors is by message passing, and there are no global variables. Check out reference capabilities.

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You can deadlock in purely message passing code, even if there are no blocking sends. See an example in Erlang: http://james-iry.blogspot.com/2009/04/erlang-style-actors-ar...

That anti-pattern isn't possible in Pony, because Pony has no blocking receive call.

Of course, and Pony prevents programmer from writing code that waits for anything else. Sure. We're supposed to believe this?

Wow, so maybe the no-deadlock guarantee really does say something nontrivial. Thanks for the heads up.

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