WTF Solidity
Recently, I have been relearning Solidity, consolidating the finer details, and writing a "WTF Solidity Tutorial" for newbies. Lectures are updated 1~3 times weekly.
Twitter: @WTFAcademy_ | @0xAA_Science
Community: Discord | Website: wtf.academy
Tutorials and codes are open-sourced on github: github.com/AmazingAng/WTF-Solidity
NOTE: the English Version of WTF Solidity is preliminary and requires further community review.
Intro​
Chapter 1: HelloWeb3 (3 lines of code)：Code | Tutorial
Chapter 2: Value Type：Code | Tutorial
Chapter 3: Function (external/internal/public/private, pure/view, payable)：Code | Tutorial
Chapter 4: Function Return (returns/return)：Code | Tutorial
Chapter 5: Data Location (storage/memory/calldata)：Code | Tutorial
Chapter 6: Array and Struct：Code | Tutorial
Chapter 7: Mapping：Code | Tutorial
Chapter 8: Default Value：Code | Tutorial
Chapter 9: Constant (constant/immutable)：Code | Tutorial
Chapter 10: Control Flow：Code | Tutorial
Chapter 11: Modifier：Code | Tutorial
Chapter 12: Event：Code | Tutorial
Chapter 13: Inheritance：Code | Tutorial
Chapter 14: Interface：Code | Tutorial
Chapter 15: Errors：Code | Tutorial
Advanced​
Chapter 16: Function Overloading：Code | Tutorial
Chapter 17: Library：Code | Tutorial
Chapter 18: Import：Code | Tutorial
Chapter 19: Receive ETH (fallback/receive)：Code | Tutorial
Chapter 20: Send ETH (transfer/send/call)：Code | Tutorial
Chapter 21: Call Other Contracts：Code | Tutorial
Chapter 22: Call：Code | Tutorial
Chapter 23: Delegatecall：Code | Tutorial
Chapter 24: Create Contracts in Another Contract：Code | Tutorial
Chapter 25: Create2：Code | Tutorial
Chapter 26: Delete Contract：Code | Tutorial
Chapter 27: ABI Encode/Decode：Code | Tutorial
Chapter 28: Hash：Code | Tutorial
Chapter 29: Function Selector：Code | Tutorial
Chapter 30: Try-Catch：Code | Tutorial
Application​
Chapter 31: ERC20：Code | Tutorial
Chapter 32: Token Faucet：Code | Tutorial
Chapter 32: Airdrop：Code | Tutorial
Chapter 34: ERC721：Code | Tutorial
Chapter 35: Dutch Auction：Code | Tutorial
Chapter 36: Merkle Tree：Code | Tutorial
Chapter 37: Signature：Code | Tutorial
Chapter 38: NFT Swap：Code | Tutorial
Chapter 39: Random Number：Code | Tutorial
Chapter 40: ERC1155：Code | Tutorial
Chapter 41: WETH：Code | Tutorial
Chapter 42: Payment Split：Code | Tutorial
Chapter 43: Linear Vesting：Code | Tutorial
Chapter 44: Token Lock：Code | Tutorial
Chapter 45: Time Lock：Code | Tutorial
Degen​
Chapter 46: Proxy Contract：Code | Tutorial
Chapter 47: Upgradeable Contract：Code | Tutorial
Chapter 48: Transparent Proxy：Code | Tutorial
Chapter 49: UUPS：Code | Tutorial
Chapter 50: Multisig Wallet：Code | Tutorial
Chapter 51: ERC4626 Tokenized Vault：Code | Tutorial
Security​
Chapter S1: Reentrancy Attack：Code | Tutorial
Chapter S2: Selector Clash：Code | Tutorial
Chapter S3: Centralization：Code | Tutorial
Chapter S4: Centralization Risks：Code | Tutorial
Chapter S5: Integer Overflow：Code | Tutorial
Chapter S6: Signature Replay：Code | Tutorial
Chapter S7: Bad Randomness：Code | Tutorial
Chapter S8: Contract Length Check Bypassing：Code | Tutorial
Chapter S9: Denial of Service (DoS)：Code | Tutorial
Chapter S10: Honeypot / Pixiu：Code | Tutorial
Chapter S11: Front-running：Code | Tutorial
Chapter S12: tx.origin Phishing Attack：Code | Tutorial
Chapter S13: Unchecked Low-Level Calls：Code | Tutorial
Chapter S14: Block Timestamp Manipulation：Code | Tutorial
Chapter S15: Oracle Manipulation：Code | Tutorial
Chapter S16: NFT Reentrancy Attack：Code | Tutorial