Why you should clean your code with Extension Methods!

[@KirbyGC00]

+Unity3d College, Your expertise in computer science and game development clearly shows in every video. I haven't seen this level of competence in any other tutorial/educational series for game development. Thanks so much for sharing years of hard work and knowledge with those of us just starting out =).

[@Unity3dCollege]

thx :)

[@thinkofwhy]

Nullable & assignable parameters? Cool, thanks. Had no idea.

[@beardordie5308]

I assume those would require the newer compiler version, which is fine. They are handy for sure. I never saw ?? before. Neato.

[@Unity3dCollege]

Those work fine w/ the old .net profile :)

[@ZOMBIEBUST3R]

I had no idea either. It came in clutch 'cuz I needed something like this but didn't know it existed

[@brodieeli5653]

You probably dont care but if you're stoned like me atm you can watch pretty much all of the latest movies and series on InstaFlixxer. I've been binge watching with my girlfriend during the lockdown :)

[@pj-wille]

Though it may be a very long time before I can afford your course, I'm glad you have so much useful content on youtube for free. Really saves people like me who want to get into game dev but just don't have spare cash. Thank you a ton.

[@AlbertoFdzM]

This is amazing! I've come from JS and I'm losing a lot of stuff to learn in my way to Unity3D and C#. Your videos are helping me a lot, keeping apart the basics and diving into good practices, game dev patterns and a lot of medium and senior stuff I couldn't find anywhere else. Thanks a lot for your videos.

[@Unity3dCollege]

thank you :) glad to hear they're helpful! :)

[@Frank_G_Finster]

For a total coding beginner like me, that was really helpful. Explained very clear and presented with easy to follow examples. Thank you very much, it will be put to good use.

[@woodenfences]

Very useful! It is this basic-to-intermediate stuff which I find most helpful as I am still learning C# and Unity. That transform.position.y = someFloat was the perfect example I could relate to! Big thanks!

[@ludovicmahieu8278]

Nullable & assignable parameters? I was like 'wooooo magic code' :D you're standing above the crowd of all tutorials I've ever seen in each videos

[@digitalconsciousness]

I have watched several of your videos now and am really liking stuff like this. Always wanted to know how to do this because using multiple classes / extension methods / state managers to split my code up has always been my biggest weak point.

[@baroquedub]

I always learn so much watching your videos! Thank you

[@bissash103]

same

[@Unity3dCollege]

You're very welcome! Thanks :)

[@brandobin]

Thank you so much! I've been coding for like a decade and never learned about nullable parameters. Extension methods are pretty cool too.

[@stefano4993]

A lot of useful little tools in one video. Thank you!

[@youcancallmedoggie]

Been looking for something like this since I started my game development journey.. Thank you so much!!

[@kuraikage15]

Learned a lot of new things here. Thanks!!

[@victorlee98]

Thank you very much. I hope u release more video like this. It's very helpful

[@andread4721]

Fantastic! Thank you so much, Jason!

[@piyushmayekar1192]

You deserve a lot more subs & views than you already have!!!

[@Defectoms]

Wow, this is quite a few things I did not know about C# Thanks a lot!

[@TChrisBaker]

thanks this was totally new to me. Very cool

[@andrieskruger9826]

This was great! Thanks Jason.

[@TsetTsyung]

Once again, an awesome vid on a subject that's on my 'To Study' list. Thank you so much! XD

[@MecegguemMohamed]

Can you make a video on event using Action Delegate of the namespace system; Event ,EventHandler, EventArgs

[@deepshipalpha3861]

This is so cool! Now I shudder at all the refactoring I probably should be doing..

[@zekiozdemir420]

I didn't know this. Thank you!

[@jandd661]

Great video! thank you! I really like the idea of a resource repository. Though I'm afraid it would make me lazy ;)

[@NemesisTWarlock]

Mind. Blown.

[@GerOB1988]

Thank you for this!

[@jaydstein]

How do I unit test these extension methods?

[@SpLineFx]

Nullable and assignable parameters are great, thanks! But why do we need these extension methods? I still can't get it. We could just write our own class called Utilities or something. With extension methods you may return to your code after some time and completely forget that you wrote something for Transform or Color class, you can search help file for these new methods, etc. As for me, it's just a trick for a trick, some sugar, nothing more.

[@Unity3dCollege]

You definitely could, there's nothing wrong w/ that at all. That's actually what I used to do before extension methods were introduced. The main difference I've found is just with discoverability, when the extension methods are used, it looks like part of the class/struct, and it pops up for intellisense, so other people on the team are more likely to realize it exists and use it (instead of writing duplicate code). Outside that though, there's no technical difference :)

[@SaiPrashanthNS]

Awesome feeling power :) Nullable and assignable parameters awesome Do more programming standard videos wrt to gaming.. Thanks cheers

[@furkankocak3142]

Here is a similar extension directly for Transform class: You can basically do the same thing in the video with only writing transform.With(y:0); instead of transform.position = transform.position.With(y:0); public static class TransformExtension { public static void With(this Transform original, float? x = null, float? y = null, float? z = null) { original.position = new Vector3(x ?? original.position.x, y ?? original.position.y, z ?? original.position.z); } }

[@beardordie5308]

I'd love to see a list of the most useful and/or commonly used extension methods for Unity developers. A set I commonly use at least in 2d projects extends the transform class with methods IsLeftOf, IsRightOf, IsBelow, IsAbove, and includes an optional tolerance parameter which makes those a lot more versatile. Here those are: gist.github.com/beardordie/0d24c1e64e88f71b2167b336afd5ae78

[@beardordie5308]

Correction: those I linked to extend the GameObject class, but one could easily adapt it to extend the transform class instead. I just found it handier to make direct reference to the gameObjects themselves.

[@billmolloy2264]

bumpty bump bump

[@Nova04550]

So your extension class doesn't need to be referenced? Like for example by existing on a GameObject and then looking for that GameObject? Does this mean the method is deriving from MonoBehaviour? **EDIT** So I did some more research and understand static methods better. So when you set up a static method in Unity, can that be called any time so long as the class definition exists somewhere in your assets?

[@ericbeaulieu419]

Hey guys, I'm wondering if there was a way of further cleaning this up. It works at the end of the day but I'm being nitpicky. I'd say this falls in relation to the vector3.flat that you created in the video Right now I'm trying to create a color extension method that resets the alpha. I also have one that sets the alpha and you pass it a float that works the same way. using UnityEngine; public static class ColorExtensions { public static Color ResetAlpha(this Color original) { return new Color (original.r,original.g,original.b,1); } } and then here's the code for the item implementing that method. hudBackground.color = hudBackground.color.ResetAlpha(); What im asking is there a way of further cleaning this up so instead of that extra bit it ends up looking like hudBackground.color.ResetAlpha();. So essentially taking out the return. I tried this a bit playing around with it but essentially I just want to set the alpha to 1 and that's it without a return but when I try to set it doesn't exist. Jason if you can put some insight on this id love it. Thanks in advance

[@NadjibBait]

The explanation is simple. You need to learn the difference between reference type and value type objects. Color is a value type object, and value types are immutables, which means that their value cannot be changed. To change it you need to create a new object literally. Value types examples: numbers (int, float...etc), bool, char and structs. Color is a struct, like Vector2/3.

[@Songfugel]

The real question of this video is, why doesn't color class have to hex baked in! xD

[@sebasuchiha2483]

you are a genius !!!

[@albarnie1168]

Nice video, mic has too much gain. turn down the gain and turn up the bass

[@greenworld5918]

i use Extension Method , and its cool.. hehe :-)

[@billmolloy2264]

thank fupp for unity3dcollege