Introduction To Protocols | Swift Language Basics

Today we go over an introduction to Swift protocols, how they work, and why they are so powerful, using Swift 4. First we go over the general structure of creating a protocol that other objects can conform to. Next, we dive into the different types of members that you might add to your protocol. Lastly, we cover how protocols can be a powerful solution to the problems in your code.

Apple itself has stated that Swift is meant to be a protocol oriented programming language. Once you can grasp the usefulness of Swift protocols, you'll be able to see how they can solve your coding problems and will probably change the way you write your code in general. Lastly, you'll have a full understanding of the composition of a protocol.

Some othe points that get covered are Swift Declare Class Func in Protocol, Why must a protocol operator be implemented as a global function, Is this a correct use of using protocols and delegate pattern in Swift, how to create delegates in swift, Usage of protocols as array types and function parameters in swift.

See what's next on the schedule by checking out my Trello board:

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[MrHardyThomas]

I must say.. this was like a breeze... got the concepts wrapped so easily...

[skafaced]

When he used the dot operator to refer to the first object my mouth dropped. Coming from other languages where you can't do this, this blew my mind.

[Zerco]

Been watching your videos all morning. Very helpful if I might say. I recently took on a project at work which involves creating an iOS app for the company. I've never used swift before. (Chose swift because it seems to be leaps and bounds easier than Obj-C) I've been trying to cram about swift for the last two weeks or so, but I've had a hard time finding good Youtubers for free tutorials. Except for one other Youtuber that was helpful with the bare basics of swift, you seem to be the best one I have found. I'm not sure why you don't have more subscribers. Everyone else either flies by info so you can't understand, or you just literally can't understand what they are saying (many with thick accents and speech problems) You speak clearly, and explain just enough so that the lesser intermediate programmer can understand, but you don't dumb it down to the point that only beginners can watch your videos. I just wanted to let you know that I appreciate what you are doing, and I will definitely be watching most if not all of you videos within the next couple weeks to help me on my first iOS project. Keep up the good work my dude. You're changing the world.

[stillwrinkled]

best damn tutorial on Swift Protocol! simple and lucidly explained.

[goatclothes]

Thanks Kyle! I am new to learning Swift and was a little confused with protocols but loved how you not only talked through it but showed us. Btw I am looking at leetcode and feel a bit lost after going through a Swift bootcamp course on Udemy. I obviously will need a better grasp of data structures and algorithms but if there is any tips you have please let me know!

[rylanjevans]

Thanks Kyle! This was a great start to protocols! I learned something new. Thanks.

[richardwalters]

I think the reason the “required” label is required for a class initializer ... is because it is possible a subclass can change the initializer in the subclass ... required marks it as “don’t change this “ for subclasses.

[lwa.dev]

Great energy on the commentary bro :-)

[ViaVanille]

Great video!!! You should make a video on how to use iOS Charts. I cannot seem to find a good source for it and I love your teaching style.

[stolenhen]

I like your video bro! Respect from Russia 🤘🏻🤘🏿

[ernestogarcia]

Thanks, gracias!! I’m eager to see the coming new lessons. My benefit, your videos and lessons improve and refine throughout subsequent lessons released release. I seize these lines to the opportunity tHope your efforts reach a fair and deserved return

[ClimbingMeko]

Lol @ "you know damn well this doesn't conform to cryptocurrency"! Love it!

[Tomgush]

3:17 "its like #crypotcurrency up in here!" ahaha

[Mobile_Architect]

You have a new subscriber ..Keep it up :)

[wizzards]

Camera is too close bro! Keep rocking excellent tutorials

[SaifKmusic]

Great video as always! Hey Kyle can you please do a video on how to shard the regular Firebase Realtime database to scale it? I can’t find anything anywhere.

[MuhammadAli-zvvz]

nice .swift it is protocol oriented but what is difference between c# interfaces vs swift protocols they are same .then what is protocol oriented programming ??

[wormholewest]

how do you comment everything automatically at 8:32

[aniltodkar]

How to Make Optional Methods in Protocol ?
Thank You.

[vasuyarasu]

hey Kilo, I like your videos but I'm new to swift.I want to learn new things.please help me. how to start