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Editorial Team
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Asked: 2026-05-27T11:48:45+00:00

When you want to convert a varible v into false when it is nil

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When you want to convert a varible v into false when it is nil/false and true otherwise, there is an easy way to do it:

!!v

But is there an easy way to convert v into nil when it is nil/false and retain its value otherwise?

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1 Answer

  1. Editorial Team

    You can use ||=:

    a = 'hello'
a ||= nil #=> "hello"

a = true
a ||= nil #=> true

a = false
a ||= nil #=> nil

a = nil
a ||= nil #=> nil
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