Solidity by Example - Deploying a Voting Smart Contract
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- čas přidán 28. 08. 2024
- In this video we'll walk through and then deploy a smart contract for enabling electronic voting. The contract will also enable voting delegation. The vote counting is automatic and completely transparent at the same time.
I'll walk through the entire codebase and explain how everything works, including showing how to create a bytes32 value from a string, and then how to transform a bytes32 back into a string.
Well also change the contract so that it accepts different data types into the constructor and talk about the tradeoffs between each type of data type.
this channel is going 10x this year, thanks for your in depth and understandable walk throughs in a space where there is very little of it available. much love
💙💙💙💯
Nice! I want to switch my career as a web software engineer to blockchain and smart contracts developer, I'm studying a lot, and these kind of videos are super helpful, there is not much great material yet about these topics. Looking forward to your nexts videos!
Awesome to hear, glad you enjoyed it!
This is going to be such a good series! I'm thinking about changing from Full-Stack JS developer to a Blockchain developer and your content makes it a lot easier. Thanks Nader 👏
Not only in financial martkets, but in writing the financial markets too. Lit!
first channel where I hit 'like' before even video start loading :) ,thanks nadir
Thank you!
So so so pleased you are in the space. Your content on other topics is superb and this is no different!
Q: in your opinion, what other languages best compliment Solidity from a syntactic/logic perspective? Typescript perhaps?
Interesting but right away quite complex, would love to see some other Solidity tuts with more basic functionality too!
Great vidoe , clear explanation. KINDLY SHARE YOUR VSCODE SETTING . i really love the contrast
as a homework for all of us, winner must be an array of winners !!
Welcome back Nader, I'm happy 😊
this is how its Done! thanks man thank you so much for all the explanation. Its great keep it up
Keep the amazing work Nader.
Thank you for your work!
The best! Thanks Nader.
Fantastic video, Thanks so much..... You're awesome
Thanks a lot. This tutorial helps me so much 😀
where can i get source code ?
Hell yeah! Nice job on 10K subs!
this is an amazing tutorial; thank you Nader.
btw, what vscode is this? it looks really nice.
Is there a tutorial that shows how to call these functions on js?
Thank you very much for this content. Can you make a video on building a CRYPTO EXCHANGE please. Thanking you in anticipation❤👌
Man, Solidity's logic is so different from what I'm used to, i.e. JS front end web development. Like, it's so weird. I'm trying to understand it as like, which part of solidity can be interpolated to JS? and most of the time I'm left with no answers. Like, mappings are a mysteryy to me. Are they like JS arrays or objects? If they're like objects, what are structs, they feel more like JS objects. But, it seems that you can define what type of items a damn array will get, and you can choose it to be structs. Gosh.
Anyway, thanks for the tutorial. We need more courses on Solidity...
Helpline 📲📩
QUESTIONS CAN COME IN ⬆️…
I know the code it for learning purpose, doesn't handle tie votes right?
CRACCCCKK!! thank you!
love this content. keep pumping more out!
Thank you so much! By the way, what are the options for updating the existing contract?
Thanks for this!
Would you write for a publication on medium for web3 developers. There wasn't one on medium so I made on called be "Web3". I though it would be use for the community to cut through all the crypo investing saturation. Other than your dev post and documenting it hard to find a variety of resource in one place.
Good job nader
I still didn't get why we need a While Loop. And how come it won't be an infinite loop if the voter[to] have already delegated. Thank you Nader for the valuable content.
It won't be an infinite loop because it essentially stops when the delegation loops back to the sender(msg.sender). At that point, I suppose the transaction just reverts without saving state changes, with that error message("found loop in delegation")
Default address in delegate is 0.
How can we put a condition in solidity that person below 18 yrs cannot vote
thank you man
What is the purpose of touch used in command prompt
The same person after 7 months of BlockChain developer...I am going to answer myself
Touch is used for creating files. Hope you understand!
thank you
Awesome!
thanks man
that was helpfull
So easily explained wtf
Awesome
github?
How can I add weight in a voting system? For example the president 's vote is 2 and other people 1???
in the constructor "voters[chairperson].weight = 2;"
@@robertshawnmitchell Do you need to create a separate constructor or can you make different weight to different titles in the same constructor?
what color theme do you use on vscode, Nader?
Its "Shades of Purple" for those curious :)
sir how to create react js front end for it
npm install create-react-app or npm install vite@latest
@@hassanxelamin trying thanku
guys I need someone to guide me how to become blockchain developer
I have some experience but I still totally beginner
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if (delegate_.voted) {
// If the delegate already voted,
// directly add to the number of votes
proposals[delegate_.vote].voteCount += sender.weight;
} else {
// If the delegate did not vote yet,
// add to her weight.
delegate_.weight += sender.weight;
}
the if statement won't run in any case, as the while loop above it will eventually point to the person with null delegation which means delegate_.voted will be false. Am i right?
Thank you!