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> er, the global value 'true' is the only instance of TrueClass.  so,
> doing true.switch! would make true become false?
>
> So then,
> if 1 == 1
> puts "hi"
> end
>
> Wouldn't print anything?


that, on second thought, probably wouldn't work, and the following would
have to be used:

light_switch=false
light_switch=light_switch.switch if dark==true

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