7 kyu
Train to remove duplicates from an array with filter()
1,165y@ro
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Arrays
Fundamentals
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Interesting. Never thought of doing it that way before. Maybe a bad practice, but still a good puzzle.
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This is a bad tip, and teaches people a bad practice. Please, remove it from the description.
I highly agree, but it's not an issue. It's a suggestion, because it does not relate to the completion of the kata.
Side moral of the story:
Don't use
filter
to remove duplicates! It's O(n^2) performance! UseSet
object to quickly do the job for you.