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Re:"Useless syntax sugar": Numbered block parameters in Ruby by the_af on Wednesday October 11, 2023 @11:35AM (#37845828)
Usage in HN is widespread, but with such a huge volume of comments, it's entirely possible for one user never to encounter any particular acronym.

See usage in HN (yes, the latest ones are mine): https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...

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