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Editorial Team
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Asked: 2026-05-23T21:36:26+00:00

I have been perusing the documentation for String today, and I saw the :sub

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I have been perusing the documentation for String today, and I saw the :sub method, which I’d never noticed before. I’ve been using :gsub and it appears that they are essentially the same. Can anyone explain the difference to me? Thanks!

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1 Answer

  1. Editorial Team

    The g stands for global, as in replace globally (all):

    In irb:

    >> "hello".sub('l', '*')
=> "he*lo"
>> "hello".gsub('l', '*')
=> "he**o"
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