Resources

Glossary

All things DeFi and dev in plain English. Our glossary breaks down complex terms and concepts into relatable language, making it easier for you to grasp the essentials of decentralized finance.

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EIPs/ERCs

Decentralized App (dApp)

Decentralized Finance (DeFi)

WETH Permit Hack (Solidity Code Example)

Vault Inflation Hack (Solidity Code Example)

Source of Randomness Hack (Solidity Code Example)

Signature Replay Hack (Solidity Code Example)

Self Destruct Hack (Solidity Code Example)

Re-entrancy Hack (Solidity Code Example)

Phishing with tx.origin Hack (Solidity Code Example)

Honeypot Hack (Solidity Code Example)

Hiding Malicious Code with External Contract Hack (Solidity Code Example)

Front Running Hack (Solidity Code Example)

Deploy Different Contracts at the Same Address Hack (Solidity Code Example)

Denial of Service Hack (Solidity Code Example)

Delegatecall Hack (Solidity Code Example)

Bypass Contract Size Check Hack (Solidity Code Example)

Block Timestamp Manipulation Hack (Solidity Code Example)

Arithmetic Overflow and Underflow Hack (Solidity Code Example)

Accessing Private Data Hack (Solidity Code Example)

Calldata in Solidity

Consensus Algorithm

Ethereum Virtual Machine (EVM)

Governance Attack

Write to Any Slot (Solidity Code Example)

Upgradeable Proxy (Solidity Code Example)

Unidirectional Payment Channel (Solidity Code Example)

Time Lock (Solidity Code Example)

Simple Bytecode Contract (Solidity Code Example)

Precompute Contract Address with Create2 (Solidity Code Example)

Multi-Sig Wallet (Solidity Code Example)

Multi Delegatecall (Solidity Code Example)

Multi Call (Solidity Code Example)

Minimal Proxy Contract (Solidity Code Example)

Merkle Tree (Solidity Code Example)

Merkle Airdrop (Solidity Code Example)

Iterable Mapping (Solidity Code Example)

Gasless Token Transfer (Solidity Code Example)

Ether Wallet (Solidity Code Example)

ERC-1155 (Solidity Code Example)

ERC-721 (Solidity Code Example)

ERC-20 (Solidity Code Example)

English Auction (Solidity Code Example)

Dutch Auction (Solidity Code Example)

Deploy Any Contract (Solidity Code Example)

Crowd Fund (Solidity Code Example)

Bi-Directional Payment Channel (Solidity Code Example)

Assembly Binary Exponentiation (Solidity Code Example)

Cryptographic Verification

Visibility (Solidity Code Example)

View and Pure Functions (Solidity Code Example)

Verifying Signature (Solidity Code Example)

Variables (Solidity Code Example)

User Defined Value Types (Solidity Code Example)

Unchecked Math (Solidity Code Example)

Try / Catch (Solidity Code Example)

Transient Storage (Solidity Code Example)

Structs (Solidity Code Example)

Shadowing Inherited State Variables (Solidity Code Example)

Sending Ether: Transfer, Send, Call (Solidity Code Example)

Reading and Writing to a State Variable (Solidity Code Example)

Primitive Data Types (Solidity Code Example)

Payable (Solidity Code Example)

Mapping (Solidity Code Example)

Library (Solidity Code Example)

Interface (Solidity Code Example)

Inheritance (Solidity Code Example)

Import (Solidity Code Example)

Immutable (Solidity Code Example)

If / Else (Solidity Code Example)

Hashing with Keccak256 (Solidity Code Example)

Gas Saving Techniques (Solidity Code Example)

Gas and Gas Price (Solidity Code Example)

Function Selector (Solidity Code Example)

Function Modifier (Solidity Code Example)

Function (Solidity Code Example)

For and While Loop (Solidity Code Example)

Fallback (Solidity Code Example)

Events Advanced (Solidity Code Example)

Events (Solidity Code Example)

Ether and Wei (Solidity Code Example)

Error (Solidity Code Example)

Enum (Solidity Code Example)

Delegatecall (Solidity Code Example)

Data Locations - Storage, Memory and Calldata (Solidity Code Example)

Contract that Creates other Contracts (Solidity Code Example)

Constructor (Solidity Code Example)

Constants (Solidity Code Example)

Calling Parent Contracts (Solidity Code Example)

Foundry Sign (Solidity Code Example)

Foundry Time (Solidity Code Example)

Front Running Hack (Solidity Code Example)

Function Modifier (Solidity Code Example)

Function Selector (Solidity Code Example)

Function (Solidity Code Example)

Function (Vyper Code Example)

Gas and Gas Price (Solidity Code Example)

Gasless Token Transfer (Solidity Code Example)

Gas Saving Techniques (Solidity Code Example)

Governance Attack

Hash Function (Vyper Code Example)

Hashing with Keccak256 (Solidity Code Example)

Hello World (Vyper Code Example)

Hiding Malicious Code with External Contract Hack (Solidity Code Example)

Honeypot Hack (Solidity Code Example)

If Else Conditional Statement (Vyper Code Example)

If / Else (Solidity Code Example)

Immutable (Solidity Code Example)

Immutable (Vyper Code Example)

Import (Solidity Code Example)

Imports (Vyper Code Example)

Inheritance (Solidity Code Example)

Interface (Solidity Code Example)

Interface (Vyper Code Example)

Internal and External Functions (Vyper Code Example)

Iterable Mapping (Solidity Code Example)

Library (Solidity Code Example)

Linear Interpolation (Vyper Code Example)

Mapping in Solidity

Mapping (Solidity Code Example)

Memory in Solidity

Merkle Airdrop (Solidity Code Example)

Merkle Tree (Solidity Code Example)

Minimal Proxy Contract (Solidity Code Example)

Modules (Vyper Code Example)

Multi Call (Solidity Code Example)

Multi Delegatecall (Solidity Code Example)

Multi-Sig Wallet (Solidity Code Example)

Multi-Sig Wallet (Vyper Code Example)

Payable (Solidity Code Example)

Payable (Vyper Code Example)

Phishing with tx.origin Hack (Solidity Code Example)

Precompute Contract Address with Create2 (Solidity Code Example)

Primitive Data Types (Solidity Code Example)

Private and Public State Variables (Vyper Code Example)

Proof of History (PoH)

Raw Call (Vyper Code Example)

Reading and Writing to a State Variable (Solidity Code Example)

Rebase Token (Vyper Code Example)

Reentrancy Attack

Re-entrancy Hack (Solidity Code Example)

Reentrancy Lock (Vyper Code Example)

Self Destruct Hack (Solidity Code Example)

Self Destruct (Vyper Code Example)

Send Ether (Vyper Code Example)

Sending Ether: Transfer, Send, Call (Solidity Code Example)

Shadowing Inherited State Variables (Solidity Code Example)

Signature Replay Hack (Solidity Code Example)

Simple Bytecode Contract (Solidity Code Example)

Smart Contract Metadata

Solidity Function

Source of Randomness Hack (Solidity Code Example)

Stable Swap AMM (Solidity Code Example)

Staking Rewards (Solidity Code Example)

Static Analysis

Storage in Solidity

Structs (Solidity Code Example)

Time Lock (Solidity Code Example)

Transient Storage (Solidity Code Example)

Try / Catch (Solidity Code Example)

Turing-complete

Uint256 in Solidity

Unchecked Math (Solidity Code Example)