Lesson 4: Remix Fund Me

⌨️ (03:31:55) Lesson 4: Remix Fund Me

💻 Code: https://github.com/PatrickAlphaC/fund-me-fcc

Introduction

Sending ETH Through a Function & Reverts

• Fields in a Transaction
• More on v,r,s
• payable
• msg.value & Other global keywords
• require
• revert

Chainlink & Oracles

• What is a blockchain oracle?
• What is the oracle problem?
• Chainlink
• Chainlink Price Feeds (Data Feeds)
  • data.chain.link
• Chainlink VRF
• Chainlink Keepers
• Chainlink API Calls
• Importing Tokens into your Metamask
• Request and Receive Chainlink Model

Lesson 3: Remix Storage Factory

⌨️ (03:05:34) Lesson 3: Remix Storage Factory

💻 Code: https://github.com/PatrickAlphaC/storage-factory-fcc

Introduction

• Factory Pattern

Basic Solidity: Importing Contracts into other Contracts

• Composibility
• Solidity new keyword
• Importing Code in solidity

Basic Solidity: Interacting with other Contracts

• To interact, you always need: ABI + Address
• ABI

Basic Solidity: Inheritance & Overrides

• Inheritance
• Override & Virtual Keyword

Lesson 2: Welcome to Remix! Simple Storage

⌨️ (02:01:16) Lesson 2: Welcome to Remix! Simple Storage

💻 Code: https://github.com/PatrickAlphaC/simple-storage-fcc

Introduction

• Remix
• Solidity Documentation

Setting Up Your First Contract

• Versioning
• Take notes in your code!
• What is a software license
• SPDX License
• Compiling
• Contract Declaration

Lesson 1: Blockchain Basics

⌨️ (00:09:05) Lesson 1: Blockchain Basics

What is a Blockchain? What does a blockchain do?

• Bitcoin Whitepaper
  • Satoshi Nakamoto
• Ethereum Whitepaper
  • Vitalik Buterin
• What is a Smart Contract?
• Nick Szabo
• Hybrid Smart Contracts
• Blockchain Oracles
• Terminology
• Web3
• What is a blockchain

The Purpose Of Smart Contracts

• 🎥 Original Video
• 🦬 My ETH Denver Talk
• 🍔 McDonalds Scandal
• ⛓ More on the evolution of agreements
• ✍️ What is a Smart Contract?
• 🧱 How does a blockchain work?
• 🔮 Chainlink & Oracles

学习视频：系统学习区块链、Solidity和前后端全栈Web3开发

License声明：

// SPDX-License-Identifier: MIT

指定版本：

pragma solidity ^0.8.0;

导入其他合约

import './SimpleStorage.sol';

继承

contract ExtraStorage is SimpleStorage{
    function store(uint256 _favoriteNumber) public override {
        favoriteNumber = _favoriteNumber + 3;
    }
}