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learn-elrond

Complex data structures and pem files (from scratch part3)

This clip explains how to deal with relatively more complex data structures.

  • define the data structures
  • persist them in the storage
  • pack data in lists as part of the smart contract response.
  • abi files
  • consume data from the client-side using erdjs

Suport me: Maiar Herotag: @bogdanoloeriu Referral link: https://get.maiar.com/referral/u9sk4wrnt0

Git commit relevant for this tutorial: https://github.com/bogdan-marian/chessout-sc-v1/tree/47d4a818128700b500e1e373f83b03256c5c2a21

-- Contents of this video -------- 00:00 - Intro 00:40 - Data structures 02:30 - API Requests limit 05:34 - Pack structures in lists 14:29 - Fast demo 19:05 - abi file 21:42 - Decode response

create contracts from scratch (part 2)

Are you interested in how to create mint and sel NFTs using Elrond smart contracts? If yes the check this tutorial witch I created specially for this purpose. https://youtu.be/jpJQ-YB4NnQ

Elrond NFTs smart contracts

Description Welcome to part 2 of how to build elrond smart contracts from scratch. This tutorial is all about NFTs.

Suport me: Maiar Herotag: @bogdanoloeriu Referral link: https://get.maiar.com/referral/u9sk4wrnt0

Git start of tutorial: https://github.com/bogdan-marian/learn-elrond/commit/d5a9e46fc7042785c311e37defac317953c1d3a0 Git end of tutorial: https://github.com/bogdan-marian/learn-elrond/commit/e165a6f39d793dacaf0eedbc941887407cbeb9c3 Part 1: https://youtu.be/UYU9Gqw8ldg

-- Contents of this video -------- 00:00 - Intro 00:44 - Setup 01:32 - Clean up 02:44 - Add the nft module 06:13 - Deploy empty contract 14:18 - Add mandos create tests 27:51 - Issue-token 32:16 - Assign local roles 47:07 - Mint some NFTs 54:43 - Buy the NFTs

create a smart contract from scratch (part 6L)

  • [] cargo new my-contract
  • [] add my_contract.rs file
  • [] create empty init entry point and compile with cargo
  • [] enable nightly rust tool chain
  • [] add wasm crate by hand
  • [] add first mandos test
  • [] persist the owner in contract storage
  • [] add the meta crate

Miaiar herotag: @bogdanoloeriu

Description Welcome to part 1 of how to build elrond smart contracts from scratch. Hint: cargo new my-contract

Suport me: Maiar Herotag: @bogdanoploeriu Referral link: https://get.maiar.com/referral/u9sk4wrnt0

Git project: https://github.com/bogdan-marian/learn-elrond Git start commit: 7cf6df7df841d8df6c837e4031207af9704d41cb

-- Contents of this video -------- 00:00 - Intro 00:51 - cargo new my-contract 02:17 - Add my_contract.rs file 02:56 - Create simple entry point 07:05 - Enable nightly rust tool chain 09:02 - Add wasm crate by hand 16:27 - Add first mandos test 20:28 - Persist the owner in contract storage 24:15 - Add the meta crate

I have created a new tutorial. How to build a smart contract from scratch: https://youtu.be/UYU9Gqw8ldg . Elrond community is awesome. I love you all ❤️

how do you deploy smart contracts at massive scale (part 4)

  • intro
  • explain the problem
  • current Elrond team dev efforts
  • demo
  • how does it work intro
    • java api code
    • docker file and deploy snippet
    • the PROJECT env value
  • initial attempt

Learn to code for Elrond (part 4)

Welcome to part four of my journey of learning how to code for Elrond. This is all about how to deploy smart contracts at scale. Love you all ❤️

Suport me: Maiar Herotag: @bogdanoploeriu Referral link: https://get.maiar.com/referral/u9sk4wrnt0

Git project: https://github.com/bogdan-marian/learn-elrond Git start commit: 69d80d9d669373dc75562a20d23c9b2b19b2731f Git end commit: 5c506e5c83543ceac0f08482972665dc65516c23 Git sow diff: https://github.com/bogdan-marian/learn-elrond/compare/69d80d9d669373dc75562a20d23c9b2b19b2731f..5c506e5c83543ceac0f08482972665dc65516c23

Audio Over You - Atch https://soundcloud.com/atch-music Creative Commons — Attribution 3.0 Unported — CC BY 3.0 Free Download / Stream: http://bit.ly/_over-you Music promoted by Audio Library https://youtu.be/rlBuOflkHSk

-- Contents of this video -------- 00:00 - Intro 01:06 - Defining the problem
02:57 - Why yo do not what to deploy by hand 03:24 - Exiting announcement by Lucian Mincu 05:54 - Demo time 09:59 - How does it work 10:44 - Java code explained 16:11 - Docker part 22:34 - PROJECT env variable 25:04 - Just for fun (initial attempt) 27:00 - Thank you for watching

https://youtu.be/Ng4-q_gCKlE Hello wonderful community. Time to learn about how to deploy contracts at scale. If you consider this type of content valuable pleas share and like. Love you all ❤️

run snippets

# build java
cd e02-crowdfunding-api
./gradlew build
cd ..
# set env project id (very useful if you deploy on google cloud)
export PROJECT_ID=my-sand-box
docker build -t gcr.io/${PROJECT_ID}/crowdfunding:v1 .
docker run -p 8080:8080 gcr.io/${PROJECT_ID}/crowdfunding:v1
docker run -it gcr.io/${PROJECT_ID}/crowdfunding:v1 /bin/bash

swagger api tool

question: How to deploy a contract from React

Is possible to use the web wallet to sign also deployment transactions?

I'm still struggling with figuring out how to deploy a contract using React. The examples from here in case of the web wallet to not cover this particular use case. https://github.com/ElrondNetwork/elrond-sdk/blob/development/erdjs/src/smartcontracts/smartContract.dev.net.spec.ts

  • In React web in order to read a binary file and not be modified on deploy you place the file in the /public folder. (I still do not know how to do this with react native)
  • The provide tests only show how to load the wasm code and deploy the contract using the "fs" library. The fs library is not available in the browser so I have loaded the contract by using the web and hard coding temporary the contract served by the '/public' folder.
  • What I get in response from testnet-wallet.elrond.com is a `413 (Request Entity Too large)

The request url https://testnet-wallet.elrond.com/hook/transaction?receiver=erd1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq6gq4hu&value=0&gasLimit=3000000&gasPrice=1000000000&data=0061736d0100000001601160047f7f7f7f0060027f7f017f600 etc etc ..... @0100&callbackUrl=http://localhost:3000/deploy

This is the current commit that shows what I tried to do. https://github.com/bogdan-marian/learn-elrond/commit/cc47f03cfa67dfc9267da4c04e2630cf38f35e30

If you want to test the project ans checkout I'm trying to do

git clone [email protected]:bogdan-marian/learn-elrond.git
[email protected]:bogdan-marian/learn-elrond.git
git checkout 003-question-deploy-smart-contrac
yarn install
yarn start
# Open Test-Net Wallet
# Deploy new contract
# Deploy contract
# You get the 413 Error

Thank you for any feedback.

Learn to code for Elrond (part 2)

  • add close wallet button
  • add denominate components
  • add contract code
  • check the contract balance
  • check using test-net that all works
    • something was wrong with ALICE

This is part two of my journey of learning how to code for Elrond

Support me: Maiar Herotag: @bogdanoloeriu Referral link: https://get.maiar.com/referral/u9sk4wrnt0

Git repo: https://github.com/bogdan-marian/learn-elrond Git start commit: bf6db8222c7be885bd766a0647408e8b4b317ee8 Git end commit: beeaf907596eb37a2f3f604cc4e6ba3cee247f74

Audio Over You - Atch https://soundcloud.com/atch-music Creative Commons — Attribution 3.0 Unported — CC BY 3.0 Free Download / Stream: http://bit.ly/_over-you Music promoted by Audio Library https://youtu.be/rlBuOflkHSk

-- Contents of this video -------- 00:00 - Intro 01:19 - Close the wallet 06:14 - Deal with eslint (BigInt not defined) 08:53 - Denominate the wallet balance 15:00 - Add the contract interaction code 21:38 - Discovering that bite code is part of contract response 23:00 - Minor refactoring 26:28 - Check contract balance 30:00 - Testing (Alice does not like me) 34:00 - Thank you for watching

part 3

Learn to code for Elrond (part 3)

This is part three of my journey of learning how to code for Elrond. The format is way more condensed and also very exciting. This is where you will learn how to send funds.

Support me: Maiar Herotag: @bogdanoloeriu Referral link: https://get.maiar.com/referral/u9sk4wrnt0

Git project: https://github.com/bogdan-marian/learn-elrond Git start commit: b48a2108ba694fbd4c4d1537b377a6823226ace4 Git end commit: 199f01076f8e9a0f9d2877680700ff1c96213759 Git sow diff: https://github.com/bogdan-marian/learn-elrond/compare/b48a2108ba694fbd4c4d1537b377a6823226ace4..199f01076f8e9a0f9d2877680700ff1c96213759

Audio Over You - Atch https://soundcloud.com/atch-music Creative Commons — Attribution 3.0 Unported — CC BY 3.0 Free Download / Stream: http://bit.ly/_over-you Music promoted by Audio Library https://youtu.be/rlBuOflkHSk

-- Contents of this video -------- 00:00 - Intro 00:30 - Demo
02:26 - React part 05:03 - How to send funds 11:57 - Thank you for watching

audio

https://www.youtube.com/watch?v=AYH71Q6i_uY&list=PLPcexzYkOpPwelvlPQSqge9vSwExWFiEm&index=15

my wallet addresses

  • test-net-chessout: erd1ytfzuxqna50rush9g9r8rfmxv9dyzetq2my4dfq8w0t4cv4lngvsd5us2n
  • test-net-bogdan: erd1mhhnd3ux2duwc9824dhelherdj3gvzn04erdw29l8cyr5z8fpa7quda68z
  • test-net-user: erd1f740t3vah0mg9qmv28q3lfwkj593nnma34q9jevzs30pa0sku4cqnjj2mk
  • contract-address: erd1qqqqqqqqqqqqqpgq3wltgm6g8n6telq3wz2apgjqcydladdtu4cq3ch0l0

Learn to code for Elrond (part 1)

the hard part (hacking our way through)

I have some notes for create react app but that is it.

log and snippets

setting up a new react project

npx create-react-app e02-crowdfunding-web-app

What to remove

  • App.css
  • index.css
  • logo
  • App.test.js From App.js
  • Just live a single div From index.js
  • remove idex.css reference

Better theam

  • Add chakra-ui
  • customize theme
  • dark theme
const theme = extendTHeme({
  config: {
    initialColorMode: "dark",
  },
});

elrond API notes

Take a look at:

https://docs.elrond.com/integrators/querying-the-blockchain/

https://api-docs.elrond.com/