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IRB: last return value

Daniel Straßner
July 24, 2017Software engineer at makandra GmbH
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In the ruby shell (IRB) and rails console the return value of the previous command is saved in _ (underscore). This might come in handy if you forgot to save the value to a variable and further want to use it.

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Example:

irb(main):001:0> 1 + 2
=> 3
irb(main):002:0> _
=> 3
irb(main):003:0> a = _
=> 3
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Posted by Daniel Straßner to makandra dev (2017-07-24 08:38)
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