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Arne Brasseur

@rap1ds is there? I think the only concensus is that it's generally a predicate, so output should be truthy/falsy.

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Mikko Koski ๐Ÿ‡ซ๐Ÿ‡ฎ

@plexus I read this from Clojure FAQ โ€œMore specifically, a trailing ? indicates that a predicate strictly returns a boolean result (true or false)โ€ clojure.org/guides/faq#qmark_b

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