Browse all Cairo Smart Contracts articles.
6 min read
Solidity Mutation Testing Mutation testing is a method to check the quality of the test suite by intentionally introducing bugs into the code and ensuring the tests catch the bug. The kind of bugs...
Last updated on Oct 29, 20255 min read
Understanding smart contract metadata When Solidity generates the bytecode for the smart contract to be deployed, it appends metadata about the compilation at the end of the bytecode. We will examine...
Last updated on Oct 29, 20256 min read
Ethereum precompiled contracts Ethereum precompiles behave like smart contracts built into the Ethereum protocol. The nine precompiles live in addresses 0x01 to 0x09. The utility of precompiles falls...
Last updated on Oct 29, 202510 min read
Solidity RSA signatures for airdrops and presales: Beating ECDSA and Merkle Trees in Gas Efficiency Updated: Aug 4, 2023 By Suthan Somadeva and Michael Burke ECDSA Vs RSA Introduction Creating a...
Last updated on Oct 29, 20253 min read
Solidity Staticcall EIP 214 Staticcall is like a regular Ethereum call except that it reverts if a state change happens. It cannot be used to transfer Ether. Both the EVM opcode, the Yul assembly...
Last updated on Oct 29, 20257 min read
Solidity vs Rust A common misconception is that learning blockchain is about learning a new programming language. It isn't. Learning blockchain is far more akin to learning a framework than a...
Last updated on Oct 29, 2025The blockchain shortage of developers is not real. !Typewriter close up Photo by markuswinkler (https://unsplash.com/@markuswinkler) It’s hard to read news about developers and not get the impression...
Last updated on Oct 29, 2025Flash Loans and how to hack them: a walk through of ERC 3156 Flash loans are loans between smart contracts that must be repaid in the same transaction. This article describes the ERC 3156 flash loan...
Last updated on Oct 22, 20256 min read
ERC20 Snapshot ERC20 Snapshot solves the problem of double voting. If votes are weighed by the number of tokens someone holds, then a malicious actor can use their tokens to vote, then transfer the...
Last updated on Oct 22, 202511 min read
How ERC721 Enumerable Works An Enumerable ERC721 is an ERC721 with added functionality that enables a smart contract to list all the NFTs an address owns. This article describes how functions and how...
Last updated on Oct 22, 2025The initializable smart contract design pattern Initializers are how upgradeable contracts achieve the behavior of a constructor. When deploying contracts, it's common to call a constructor to...
Last updated on Oct 22, 20258 min read
Layer 2 Calldata Gas Optimization Update for mid 2024: As of the Dencun upgrade, calldata optimization doesn't have as much of an impact since the transactions on most L2s are stored on blobs,...
Last updated on Oct 22, 2025