Solidity
Programming language for writing Ethereum smart contracts — foundation for DeFi and NFT.
Solidity is an object-oriented programming language specially designed for writing smart contracts on the Ethereum Virtual Machine (EVM).
Characteristics:
•Statically typed — every variable has a type
•Compiles to EVM bytecode
•Syntax similar to JavaScript and C++
•Versioning: pragma solidity ^0.8.0;
Key concepts:
•msg.sender — address calling the function
•require() — condition validation, revert on error
•emit Event() — emitting event for off-chain tracking
•modifier — reusable condition
•payable — function receives ETH
Where to learn:
•Solidity docs (docs.soliditylang.org)
•CryptoZombies — gamified learning
•Hardhat/Foundry — development framework
Alt languages:
•Vyper — Python-like, fewer features, more security
•Rust — Solana (Anchor framework)
•Move — Aptos, Sui