“Deny Capabilities for Safe, Fast Actors (2015)” by Sylvan Clebsch et al. lays out the core novel idea behind the Pony programming language: deny capabilities. Deny capabilities take object capabilities, turn them on their head and then apply them to variable aliases.
In this talk, Sean T. Allen (member of the Pony core team) explains Deny Capabilities and how Pony combines them with an actor-based model – to provide a programming environment that allows for data-race freedom and fearless concurrency.
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