As the man said, for every complex problem thereâs a simple solution, and itâs wrong. Umberto Eco, Foucaultâs Pendulum Thanks to our diligent labor in the last chapter, we have a virtual machine with working functions. What it lacks is closures. Aside from global variables, which are their own breed of animal, a function has no way to reference a variable declared outside of its own body. var x =
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