How Do You Write Closures in Swift?

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Published 2017-08-30

Closures are used everywhere in Swift and the UIKit APIs that we have access to. Today we'll go through a simple exercise of how to write and apply closures by going through a simple algorithm exercise. This lesson covers how to write filtering functions using closures to make our programs more robust. Have fun.

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All Comments (21)

@PedrocaRicardo 6 years ago

FINALLY someone who made me understand closures, thank you!
@antonlebedev2890 11 months ago

Now I seem to be getting pretty much closer to the point of understanding WHY do we need closures)) Thanks a lot!
@mutasemwahbeh6954 3 years ago

Eventually someone decided to make closure understandable and easy to use thank you sir !
@developerios6096 6 years ago

I love these kind of videos, where you explore the code syntax for advanced stuff. Nice and clean, thank you brian!
@emindeniz 5 years ago

Best tutorial for Closures so far. Thank you man.
@generalk9947 6 years ago

I am starting university in a couple weeks and by previously watching ur top quality videos on software engineering u have really inspired me to take this course even more because I now realise the many things you can do as a software engineer especially creating apps and how much you can potentially earn thanks👌🏾
@israman30 6 years ago

Beautiful closure explanation..!! Thank you!
@Pedruchito 4 years ago

Thank you very much for making this tutorial video and, for making it with simple explanations so I can understand it. I love it !!
@Noahnrg22 6 years ago

Another great video, everyday you surprise me with what I can learn, thanks !!
@maxgebhardt6213 4 years ago

One of my favorite youtubers! Awesome stuff!
@BreatheDigital 6 years ago

Really needed this! Many thanks! You have yourself a new subscriber.
@markdang3379 6 years ago

Your videos are so helpful. Very clear and informative. Thank you!!!
@liminal18 6 years ago

Thanks paused the video and used a closure to solve some mases in that ios swift game. Was a lot of fun.
@jonaseduardo01 4 years ago

Nice explanation , I've been watching tutorials about this in the last days , I thinks that is a very useful concept
@drewster6981 6 years ago

Brilliant. Really good explanation of closures.
@arrinal 2 years ago

Bro... you save me from understanding closure! Thanks a lot!
@marie-pascalechauvel9169 5 years ago

This video is so helpful. Thanks for posting it!
@kaiseration 5 years ago

I just tested this code: func filterWithPredicateClosure(closure: (Int) -> Bool, numbers: [Int]) -> [Int]{ let greater = numbers.filter(closure) return greater } filterWithPredicateClosure(closure: { return $0 > 6 }, numbers: [1,2,3,4,5,10]) It successfully run. :D Thanks Brian.
@septronic2010 6 years ago

Another really useful tutorial! Thanks a lot
@KouroshPiano 6 years ago

Great video. Keep it up Brian ✌🏼