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re: Map/Filter/Reduce Crash Course VIEW POST

FULL DISCUSSION
 

This is a great breakdown, another big benefit (which you mentioned near the beginning) is that it returns you a new instance of an array instead of mutating the original one.

 

Yes, definitely - I didn't have the space to really expand on that (maybe a part 2!), but these three really shine when you want to not mutate data.

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