Filter JavaScript Arrays Like a Boss

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This video didn't tell us how to filter an array like a boss.

redorange

you also can write like this, which is little bit simple :const unique = [...new Set(arr)]

stevenwinsir

What's going on behind the scenes? What's the time complexity of that? Seems like it would be slow.

HelloWorld-fgnm

sets aren’t talked about enough. more practical problems solved by sets would be greatly appreciated!

aarond

let uniqueColors = [...new Set(colors)]

bowiemtl

Not only JS, most modern languages have set()

blender_wiki

Boss doesn't filter array, that's ur job

danhnhan

Okay, but what if I have an array of objects? 😂😂😂

Тима-ууш

Can you achieve this with array of objects?

panshak

I use set method to duplicate array of data types string. It’s cool though

Snapchk

That's what I need, just in PHP.

punkerts

ok, so how do you filter an array? :)))

stefanddamian

Cool, but now do it in O(1) memory :D

silentlyow

Useful, but still lot oc code when comparing to Python 😅

Btw, does Set in JS preserves order of items?

Forseti

learnt about this yesterday in my JS course!!!!

so useful 😃

okaforraphael

Pls answer, when scrolling with keyboard with ctrl + up/down in windows and the cursor is in another place so when I leave ctrl button, and move cursor with keyboard up/down button in order to place the cursor in currently scrolled place, the scroll goes to the first place where the cursor was! so what is the benefit of keyboard scrolling? is there any way when scrolling with keyboard move cursor along????

sabbirsobhani

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