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   Axel Rauschmayer (rauschma@fosstodon.org)'s status on Wednesday, 13-Nov-2024 08:30:44 JST Axel Rauschmayer

   How I make sense of .flatMap():
   – .map(): Each input element corresponds to one output element.
   – .flatMap(): Each input element corresponds to zero or more output elements.

   More information, uses cases and examples: https://exploringjs.com/js/book/ch_arrays.html#Array.prototype.flatMap

   #JavaScript

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     Sergey on FunctionalScript (functionalscript@techhub.social)'s status on Wednesday, 13-Nov-2024 08:30:44 JST Sergey on FunctionalScript

     in reply to

     @rauschma I remember it because 'c.map(f).flat()' is equal to 'c.flatMap(f)'.