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Editorial Team
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Asked: 2026-06-10T00:08:05+00:00

We can assign a thread-local variable on Ruby, like so: Thread.current[:foo] = 1 Thread.current[:bar]

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We can assign a thread-local variable on Ruby, like so:

Thread.current[:foo] = 1
Thread.current[:bar] = 2

But how do we list / enumerate those variables at a later time?

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1 Answer

  1. Editorial Team

    You can get the keys using Thread#keys:

    Thread.current[:foo] = 1
Thread.current[:bar] = 2
Thread.current.keys  # => [:__recursive_key__, :foo, :bar]

    Don’t know how that’s helpful though, because you should know which keys you use.

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