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Home/ Questions/Q 8379085
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Editorial Team
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Editorial Team
Asked: June 9, 20262026-06-09T16:05:06+00:00 2026-06-09T16:05:06+00:00

I got error as undefined variable , I know nil is evaluated to false

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I got error as undefined variable, I know nil is evaluated to false if used as boolean:

if y
  puts "Something"
end
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  1. Editorial Team
    Editorial Team
    2026-06-09T16:05:08+00:00Added an answer on June 9, 2026 at 4:05 pm

    Undefined variable is not equal to nil.

    Undefined instance variable returns nil (again, if it is undefined).

    y raises an exception

    @y returns nil

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