Getting Started with Web3 Development
February 2018 Update
We released the first version of this course in September 2017. Back then, the latest version of Truffle was version 3, and the best Ethereum node emulator was testrpc, on the command line.
Read more
February 2018 Update
We released the first version of this course in September 2017. Back then, the latest version of Truffle was version 3, and the best Ethereum node emulator was testrpc, on the command line.
February 2018 Update
We released the first version of this course in September 2017. Back then, the latest version of Truffle was version 3, and the best Ethereum node emulator was testrpc, on the command line.
Then, in November 2017, the Truffle team released both Truffle 4 and a new user interface for testrpc called Ganache. Those tools had a big impact on the development lifecycle, so we took this opportunity to completely rewrite and re-shoot the practical part of this course.
We also took this opportunity to integrate most of the comments and feedbacks we got in the Q&A section of this course. So all the details you needed to troubleshoot issues are now part of the content.
This results in a consequent update with quite a few improvements:
- Full Truffle 4 coverage, including Truffle debug and Truffle develop
- Full Ganache coverage
- MetaMask workarounds, tips and tricks
- All the content has been tested on MacOS, Linux and Windows (PowerShell)
- Code is not copy-pasted anymore, we type everything live to make it easier to follow along
Note that the old content will remain online for a few weeks, and then we will unpublish them so that students don't need to watch all the old content to complete the course and get the Udemy certificate.
If you notice any issue, bug, outdated content, missing link or resource, please let us know in the Q&A section of this course.
Welcome to "Become a Blockchain Developer with Ethereum and Solidity".
This course is a complete introduction to decentralized application (Dapp) development on the Ethereum blockchain using the Solidity language and the Truffle build framework.
No need to know anything about the blockchain, you should just have some basic software development experience. Whether you have already written some code for backend, web or mobile applications, it should be enough to become a blockchain developer thanks to this course.
The blockchain is all the rage these days, and there is a lot of theoretical or anticipative talk around it, but this course will help you get your hands dirty with actual code in order to build your first decentralized application. This is the kind of skill that can get you an actual job as a blockchain developer, something that is in skyrocketing demand right now.
Have you ever looked back on the nineties, thinking you would have loved to be a part of the web revolution. Well, stop dreaming: the blockchain is here and it promises to be even bigger than the web or even the mobile revolution.
What we cover
- We briefly cover the philosophy of the blockchain, both as a crypto-currency system and as a development platform
- Then we will explain how blockchains work, what are their main components and how its ecosystem is structured
- After that we quickly go over the main cryptographic tools you need to understand
- We continue with a description of the perfect development environment, including tools that are used by most professional blockchain developers
- And the biggest part of the course is dedicated to guiding you through the iterative creation, development, testing and deployment of the ChainList decentralized application
The tools we use
- Ethereum of course
- The Metamask Chrome extension
- The Solidity smart contract language
- The Truffle build and test framework (Truffle 4)
- The Ganache Ethereum node emulator
- Github Pages
- Atom (text editor)
- The Rinkeby test network
We deliberately don't reinvent the wheel or develop our own build tools because it didn't seem very pragmatic to do that. That's why we demonstrate the use of development tools like Truffle and Ganache that offer a lot of very powerful features, even though they evolve very often.
Most of the videos were shot on a Mac, but we give detailed instructions on how to set up your environment on Linux and Windows, and all the other lessons have been tested and adapted with a few OS-specific instructions.
What's inside
Learning objectives
- Understand the basic philosophy behind the blockchain and distributed/decentralized applications
- The basics of how a blockchain generally works, just enough to be able to use it as a development platform
- Develop a web3 app, create a project, deploy it in production, write smart contracts, unit test them, and create a user interface for them
- How to combine the right tools to put together a consistent and real world pragmatic development environment
- The fundamentals of the solidity smart contract language
- How to use the truffle build and testing framework (covers truffle 4)
- How to deploy a decentralized app to various ethereum instances (testrpc, private chain, test chain, main net)
- How to unit test smart contracts
- Understand the basic philosophy behind the blockchain and distributed/decentralized applications
- The basics of how a blockchain generally works, just enough to be able to use it as a development platform
- Develop a web3 app, create a project, deploy it in production, write smart contracts, unit test them, and create a user interface for them
- How to combine the right tools to put together a consistent and real world pragmatic development environment
- The fundamentals of the solidity smart contract language
- How to use the truffle build and testing framework (covers truffle 4)
- How to deploy a decentralized app to various ethereum instances (testrpc, private chain, test chain, main net)
- How to unit test smart contracts
Syllabus
Commencez ici
Introduction
The stakes and perspectives of decentralized and distributed applications should be completely clear to you and you should be excited to get your hands dirty.
Read more
Syllabus
A very interesting video to watch in order to understand CDOs and how the crisis of credit really worked: http://crisisofcredit.com/
Test conversion checklist:
replace all the vars by let or const
transform the it() function into an async fat arrow function
replace all then() blocks with awaits
web3.eth.getBalance() is now asynchronous, so you can precede it with await
Replace all occurrences of web3.toWei() by web3.utils.toWei(), and web3.fromWei() by web3.utils.fromWei()
convert ether amounts into BNs at initialization
remove all calls to web3.toBigNumber()
convert BNs into strings everywhere we compare them with assert.equal()
remove all calls to toNumber() on getBalance() return values
call parseFloat() around calls to web3.eth.getBalance() to convert strings into javascript numbers for calculation
convert article prices back into numbers for calculations, using BN.toNumber()
Test conversion checklist:
replace all the vars by let or const
transform the it() function into an async fat arrow function
replace all then() blocks with awaits
web3.eth.getBalance() is now asynchronous, so you can precede it with await
Replace all occurrences of web3.toWei() by web3.utils.toWei(), and web3.fromWei() by web3.utils.fromWei()
convert ether amounts into BNs at initialization
remove all calls to web3.toBigNumber()
convert BNs into strings everywhere we compare them with assert.equal()
remove all calls to toNumber() on getBalance() return values
call parseFloat() around calls to web3.eth.getBalance() to convert strings into javascript numbers for calculation
convert article prices back into numbers for calculations, using BN.toNumber()
encapsulate all contract function calls expected to throw an exception into try/catch blocks
Good to know
Save this course
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Reviews summary
Web3 development: outdated content
Activities
Review Blockchain Terminology
Show steps
Reviewing blockchain terminology will help you understand the course materials more effectively.
Show steps
-
Read through a glossary of blockchain terms.
-
Create a list of the most important terms and their definitions.
-
Complete online quizzes or exercises to test your understanding.
Write Solidity Code
Show steps
Writing Solidity code will help you apply the concepts you learn in the course and develop your programming skills.
Browse courses on
Smart Contract Development
Show steps
-
Set up a development environment for Solidity.
-
Write simple Solidity contracts.
-
Test and debug your contracts.
-
Deploy your contracts to a blockchain network.
Build a Decentralized Application
Show steps
Building a decentralized application will help you understand how to use Solidity and Truffle to create real-world blockchain applications.
Browse courses on
dApp Development
Show steps
-
Design the architecture of your application.
-
Write the Solidity code for your contracts.
-
Develop the frontend for your application.
-
Deploy your application to a blockchain network.
-
Test and debug your application.
Show all three activities
Review Blockchain Terminology
Show steps
Reviewing blockchain terminology will help you understand the course materials more effectively.
Show steps
- Read through a glossary of blockchain terms.
- Create a list of the most important terms and their definitions.
- Complete online quizzes or exercises to test your understanding.
Write Solidity Code
Show steps
Writing Solidity code will help you apply the concepts you learn in the course and develop your programming skills.
Browse courses on
Smart Contract Development
Show steps
- Set up a development environment for Solidity.
- Write simple Solidity contracts.
- Test and debug your contracts.
- Deploy your contracts to a blockchain network.
Build a Decentralized Application
Show steps
Building a decentralized application will help you understand how to use Solidity and Truffle to create real-world blockchain applications.
Browse courses on
dApp Development
Show steps
- Design the architecture of your application.
- Write the Solidity code for your contracts.
- Develop the frontend for your application.
- Deploy your application to a blockchain network.
- Test and debug your application.
Career center
Smart Contract Developer
Dapp Developer
Blockchain Developer
Blockchain Engineer
Cryptocurrency Developer
Full Stack Developer: Blockchain
Web Developer: Blockchain
Software Engineer, Blockchain
Product Manager, Blockchain
Data Scientist: Blockchain
Systems Analyst: Blockchain
DevOps Engineer (Blockchain)
Project Manager: Blockchain
Business Analyst, Blockchain
Investment Analyst: Blockchain
Reading list
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