Learn React Hooks: useCallback - Simply Explained!

[@cosdensolutions]

Hope you enjoyed the video! I also have a really cool and unique course that will teach you way more than this video. You'll learn how to build an actual complex project with React. It's called "Project React" and you can find it at cosden.solutions/project-react. Also, I have a free weekly newsletter called "Import React" with tutorials, news, and cool stuff about React! You can sign up at cosden.solutions/newsletter?s=ytc

[@heybran_]

Best react educator found on youtube! Agreed everyone?

[@arunkaiser]

I agree

[@anabiatahir3772]

Agreed

[@alidbouk4335]

Absolutely !

[@amalc7814]

explains every thing in detail, crisp and clear

[@prajwalpandeshwar9967]

Absolutely

[@noahmilliken4259]

Props to Cosden for not bombarding us with some 15 second intro branding. Down to business, love it.

[@lexsemenenko]

Clean and clear explanation with examples on what and why for us to clarify the ideas behind the hook. Again, nailed! Appreciated.

[@chengxiaoxia8046]

You are a serious teacher. You tested your code truly before publishing this video, I think. I've read many articles about useCallback and their code did not work correctly coz they did not use 'memo'. Thanks so much. Your video brings us true value.

[@learner8084]

I didn't know about the memo either ! Thanks very much.

[@JakeLuden]

Genuinely the best useCallback tutorial I’ve seen, probably the best video I’ve seen regarding hooks in general. Incredible explanation and demonstrations!

[@cosdensolutions]

damn, thanks for saying that! Really means a lot 🤙

[@atomvandermerwe3613]

I 100% agree with @Jakezaruba, this video explained it perfectly.

[@SWE507]

This is the cleanest and clearest explanation of useCallback ever!!!

[@proenglishschool3120]

Thank you so much Darius! I have already finished a full-stack bootcamp which covered React in 4 weeks. I already built 4 projects with React. I thought I understood it well but realized there were gaps in my knowledge. I have watched the 4th video on React Hooks and you have done an outstanding job of covering only the necessary info and without leaving anything out in about 15 minutes per hook/topic. There are some very good coding teachers on YT and the web but you are among the best on the topic of React. You make it concise, to-the-point and very easy to follow. Your videos go at a comfortable pace for someone having been over the material once already. You don't overcomplicate it and don't leave anything out. Very clear explanation. Keep up the awesome work!

[@RaGa_BABA]

Just a small add @2:30, its not that in react functions are different, its that they are referenced type in js, very well explained, really helpful thankyou

[@uquantum]

Great video for React devs at any level. I'd forgotten that a React component that takes in a function from its parent will re-render even if the variables in that function haven't changed. Not obvious until you explained it so well. You also made it super simple and clear that useCallback memoizes a function like useMemo memoizes a variable, and that helps us minimize unnecessary re-renders.Thanks!

[@cosdensolutions]

makes me happy to hear!

[@lagekutsa]

you explain useCallback so simple man, really appreciate.

[@whiterabbitdev]

cheers dude, none of that "learn this in 3 minutes bs" you explain everything nice and clearly!

[@ahmadbenchakhtir]

The truth is: i watched two tutorials about UseCallback from great people talking my native language -Arabic-, but i didn't get the whole idea properly. now i do. Thank u.

[@amrhesham3135]

زيك ي حبيب اخوك والله ❤✌️

[@ahmadbenchakhtir]

@@amrhesham3135 🤣🤣🤣🤣🤣🤣♥ مرحبا مرحبا

[@ahmadbenchakhtir]

@@amrhesham3135 🤣🤣🤣🤣🤣♥

[@smokinjoe3000]

Just discovered these today - and they're so well presented! These are things I use at work every day and you've done such a great job in explaining the benefits and pitfalls of each of these react hooks! Definitely pointing any new engineer over to your channel to learn/understand them

[@rajeshmaydev]

the words you picked "freeze in time". Really helped me wrap the idea of it after many months of doubt

[@levezze]

This is by far the best explanation I've seen. Thank you!

[@shubham.verma-dev]

Nicely explained. I tried to understand from other videos as well, but this is really good. Now I am done with my doubts.

[@cosdensolutions]

Happy to hear! 🤙

[@shashankkumar7568]

You deserved to be subscribed , best explanations i ever heard for hooks

[@TYTAX_HOME_GYMS]

greetings from Poland. I often watch your videos, which are helpful in designing websites and web applications

[@saishkhandare1661]

Thank you, for such a straightforward explanation.

[@peirama2]

Man, i follow and watch the videos of many tech youtubers and i have seen a ton of tutorials from many of them. This single video is the best tutorial of any concept i have ever seen. Tons of respect!

[@cosdensolutions]

Thank you for the kind words!

[@peirama2]

@@cosdensolutions thank you for the many “aha” moments

[@Za-xh9tj]

Expected to learn useCallback, instead I learned how react rerender, memo, and usecallback works. Amazing.😄

[@__shubhamtiwari]

Bhai sahab matalab ekdam gajab padhaya yaar, dil jeet liya dost ❤

[@antimrevapati8992]

Thank you so much for making these easy to understand videos. The most important thing you did was first intruduce the problem and then explain what the topic is and how can we solve this issue using this topic, this is a wonderful strategy to follow. Thanks again!

[@cosdensolutions]

Thank you for the kind words ☺️

[@diggerdog001]

15:32 When u put 'users' in arr dep i really thought them why we need use Callback if we started from where our problem starts. And you began explain 😀

[@briandacallos4234]

I'm shocked how he explained it very well than anyone could. Automatic subs!

[@cosdensolutions]

Much appreciated! ☺️

[@Makłowiczwpodróży-q6l]

Best hooks tutorial I've encountered so far! Thanks 🔥

[@manojmrpd]

You are really a great educator. The best react tutorials found on KZbin! Very Appreciated @Cosden Solutions

[@tingwen1713]

Hey! Just wanted to say that I've been going through your Learn React Hooks playlist and it's been so helpful. Thank you for making this content. You're a great educator!

[@nikkehtine]

This channel is a goldmine

[@pammvigroup1171]

Very good explanation of callbacks

[@mahdiabolghasemi189]

You are an awesome educator. Keep gooing🔥

[@g10-you]

you are very clear concept wise. No need to follow any other videos on react hooks. really liked all your videos. Thanks and much appreciated

[@abdulazeezolalere9638]

Really is the last useCallback tutorial I'll watch 👍

[@coolme7437]

Thanks, this really is my last useCallback tutorial.

[@shamimhossain551]

Ahh! you make my day. Was in a maze whole day about the using of useCallback. You've just come up with a propper salvation. Thanks ❤

[@CalltheWei1020]

Love how you explain the whys and what really happens behind the scenes. Thanks and much appreciated

[@Gangbuster74]

By far this is rhe best explanation have watched many many tutorials, but you explained it in very simple terms 🎉ty

[@cosdensolutions]

Glad to hear it! 🤙

[@fhkodama]

Oh, finally a good explanation about this hook! You got a subscriber with this video! Thanks!

[@borameupai1792]

Your explain saved my life. U just got a new subscriber. Thanks.

[@viliuxsas]

I am happy that I found this channel! Thank you for very clearly explanation about React hooks and because of you I improved my knowledge.

[@cosdensolutions]

glad to hear it!!!

[@SinanZen1981]

great explanation thank you. no blank spaces left

[@srsh12345]

thank you for the breakdown. Helped me a lot.

[@catalincatalin4101]

We really needed someone make this hooks simple. Thanks

[@dilshadazam880]

You deserve atleast 1 million subscribers. Please keep making such videos

[@vladpoleshyk6814]

Thx, after your explanation all became clear!

[@stevebuonincontri6853]

I like your teaching style

[@NishimweRukundoProsper]

Nailed it, Clear explanations

[@SREETAMAMITRA]

Explained in very simplified way !

[@ayushikarn1893]

I am so lucky to have found your channel. I would love to be mentored by you :)

[@kisuhara7844]

literally the best react tutor thank you for your videos

[@vivekkumar-pc1xy]

Great video, well explained. Everything is now crystal clear

[@oscardasilva971]

The last example was very clever. Thank you sir.

[@mohamedafridi2341]

Great Explanation, thanks

[@vesa95]

Awesome explanation, man! very, very clever!

[@userfhhoyhgfdgg]

It's perfect! Thank you so much. You're great!

[@alinaned2238]

🔥🔥🔥I think I finally got it! Thank you so much for the explanation!

[@PradeepManek]

Thank you brother you explain this topic very well.

[@aleksandrgolyk3787]

Great explanation 🎉🎉🎉 i was so struggling with understanding this topic. Thank you🎉🎉🎉

[@haiderjaafer8164]

Great to see you here I followed you on tiktok. So great work keep going forward

[@cosdensolutions]

Nice! Thanks! Will do ☺️

[@Luis3alsa]

When you decide to put 'Simply Explained!' in the title, I know for sure I'll understand!

[@danurarya0823]

A very valuable lesson, thanks for sharing

[@attouyassine1056]

Appreciate the way you explained it, thanks

[@DamerlaPravallika]

Very well explained 💌

[@radhiarahmani9523]

Very well explained! Thank you so much

[@Ceyesse]

Excellent work.

[@victorlindh3129]

Very good explanation!

[@jenlesamuel]

Awesome Video. Thank you!!!!

[@Coding_Rights]

Finally I understood useCallback ❤️ Thanks a lot!

[@alangraton2000]

Dude, your channel is the bomb. Thanks for the vids ^-^

[@cat_demon4405]

Underrated channel! subscribed

[@saikumar.reach99]

Helped me understand callbacks it was tough earlier

[@acm.marques]

excellent explanation

[@atakan8570]

best teacher ever

[@VijayVibhuteFlautist]

Love it! Appreciate the way you explained everything. ❤

[@ASOCMARCTKD]

Excellent explanation, thank you 😇

[@ericjunior105]

Dropped a like before I pressed play

[@Jam....]

Excellent clear explanation thank you.

[@legend_749]

awesome explaination, pls continue this series

[@cosdensolutions]

Will do!

[@pythonfamily]

omggg Great explanation. Thank you bro

[@WaseemAhmad-mf3wh]

Thank you for your clear explanation ❤

[@shabeeeb6400]

you earned a sub :) great explanation

[@dumbfailurekms]

Great content brother!

[@seelvek6550]

Thanks! Good stuff 🙇

[@2029leandro]

Perfectly explained!

[@jithinbalakrishnan]

Thank you so much for this content.

[@dipayanchakraborty2417]

Great video!

[@belkocik]

Very clear explanation!

[@sidkan9251]

you got a new subscriber thanks man

[@abhinavdhama3014]

Amazing explanation on hooks ❤❤❤❤

[@cosdensolutions]

glad you liked it!

[@samahgad241]

thanks alot, very happy to know your channel🌹

[@aliksayfullin3278]

Great explanation 👍

[@giannizamora7247]

One of the things I noticed at 15:05 is that 'alex' shows but If you typed "james" the console log users[0] would have still been alex and that's because before our input changed alex was the first person in that list.

[@myrachanto]

great work , thanks for sharing

[@TimothyVandeweerd]

Hi, thank you so much. I appreciate sharing your knowledge and love your tutorials. I am trying to work through this one and am asking if you can please make the shuffle function referenced in the index.tsx file (import { shuffle } from '@/utils';) available.

[@SPribyt]

Good job explaining!

[@HenryBabbage]

Awesome explanation. Thanks!

[@cordial]

After you add 'users' as a dependency to the useCallback, if you press shuffle, would the search component still not rerender?

[@cosdensolutions]

Yes it does, but that is what you want. You don't want to prevent a render, you just want to control when it happens. So if there was another piece of state that would change, then it wouldn't re-render. You only want to re-render when what it depends on changes, and nothing else!

[@cordial]

@@cosdensolutions cheers. great video as always btw.

[@rgchroniclestv]

Really a big help. Thanks

[@dylcodes]

Great video, thank you!