JavaScript Map MasterClass // HashMap - Dictionary Data Structure

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Chapters
0:00 JavaScript Map Class
2:03 Maps and Iterables
3:16 JavaScript Map vs Objects
4:54 Maps preserve Insertion Order
5:58 JavaScript Map Methods and Properties
7:31 Object to Map to Object
8:40 Map Key Best Practices
10:28 Outro

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[noccer]

Great stuff as always Bas!

Question - which is more performant when trying to loop over every item, let's say each item is just a string value:
- performing for-of on all items in a Map?
- for of on the keys of an object?
- foreach on an array of strings?

I'm working on a hobby app with large swathes of deeply nested objects that have cumulative values that get periodically updated, I found looping and updating them as an array was pretty slow ✌️

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