The description of .flatMap() is incorrect - it works like .map(), then .flat(1). That's a lot more useful, as it lets your mapping function return zero- or multiple-element arrays to change the number of elements in the result.
Thanks for the notice! I edited the article.
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The description of .flatMap() is incorrect - it works like .map(), then .flat(1). That's a lot more useful, as it lets your mapping function return zero- or multiple-element arrays to change the number of elements in the result.
Thanks for the notice! I edited the article.