symbiont-ruby

https://github.com/0exp/symbiont-ruby

Symbiont is a cool implementation of proc-objects execution algorithm: in the context of other object, but with the preservation of the closed environment of the proc object and with the ability of control the method dispatch inside it. A proc object is executed in three contexts: in the context of required object, in the context of a closed proc's environment and in the global (Kernel) context.