Solidity by Example

ABI Decode ABI Encode Accessing Private Data Array Assembly Binary Exponentiation Assembly Error Assembly Conditional Statements Assembly Loop Assembly Math Assembly Variable Bitwise Operators Call Calling Other Contract Constants Constructor Data Locations - Storage, Memory and Calldata Enum Error Ether and Wei Events Fallback First Application Function Modifier Function Selector Function Hashing with Keccak256 Hello World If / Else Immutable Import Inheritance Interface Library For and While Loop Mapping Primitive Data Types Verifying Signature Reading and Writing to a State Variable Structs Calling Parent Contracts Try Catch Unchecked Math Variables View and Pure Functions Visibility

Bi-Directional Payment Channel Chainlink Price Oracle Crowd Fund DAI Proxy Examples Deploy Any Contract Discrete Staking Rewards Dutch Auction English Auction ERC1155 ERC20 ERC721 Ether Wallet Front Running Gasless Token Transfer Honeypot Iterable Mapping Merkle Tree Minimal Proxy Contract Multi Call Multi Delegatecall Multi-Sig Wallet Contract that Creates other Contracts Payable Self Destruct Sending Ether (transfer, send, call) Staking Rewards Time Lock Uni-Directional Payment Channel Uniswap V2 Add Remove Liquidity Uniswap V2 Flash Swap Uniswap V2 Optimal One Sided Supply Uniswap V2 Swap Upgradeable Proxy Vault Inflation Vault WETH Permit

Block Timestamp Manipulation Denial of Service Deploy Different Contracts at the Same Address Hiding Malicious Code with External Contract Arithmetic Overflow and Underflow Phishing with tx.origin Re-Entrancy Shadowing Inherited State Variables Signature Replay

Bypass Contract Size Check Precompute Contract Address with Create2 Delegatecall Gas Saving Techniques Gas EVM Memory Layout in Solidity Source of Randomness Simple Bytecode Contract EVM Storage Transient Storage Write to Any Slot

Constant Product AMM Constant Sum AMM Echidna Stable Swap AMM Uniswap V3 Flash Swap Arbitrage Uniswap V3 Flash Loan Uniswap V3 Liquidity Examples Uniswap V3 Swap Examples