Browse all Solidity articles.
8 min read
Cairo Components Part 1 Components in Cairo behave like abstract contracts in Solidity. They can define and work with storage, events, and functions, but they can’t be deployed on their own. The...
Last updated on Dec 11, 202511 min read
Structure of a Basic Contract This article shows how to build a deployable Cairo contract for Starknet. Starting from a simple sketch, we will gradually add features to build a working contract...
Last updated on Dec 11, 20257 min read
Function Visibility in Cairo Cairo does not have "internal" and "pure" modifiers (or any other modifiers for that matter) like Solidity does. Recall that marking an block with tells Cairo to include...
Last updated on Dec 10, 20259 min read
Cairo for Solidity Developers Cairo is a Rust-inspired language that compiles to bytecode, which runs on the Cairo Virtual Machine. The Cairo virtual machine is a zero-knowledge virtual machine...
Last updated on Dec 18, 202510 min read
Type Casting Type casting in Cairo is the process of converting values from one data type to another. This becomes necessary when working with Cairo's strict type system, where explicit type matching...
Last updated on Dec 10, 2025How Ethereum address are derived (EOAs, CREATE, and CREATE2) On Ethereum, smart contracts can be deployed in one of three ways: An Externally Owned Account (EOA) initiates the transaction where the...
Last updated on Aug 22, 20258 min read
Tickmath getSqrtRatioAtTick This article explains how the function in Uniswap V3 TickMath library works. The function takes a tick index and returns the square root price at that exact tick as a...
Last updated on Aug 20, 20254 min read
MD5 Hash In Circom In this tutorial, we will implement the MD5 hash in Circom both to compute the hash and to constrain in Circom that it was computed correctly. Although the MD5 hash function is not...
Last updated on Aug 20, 202511 min read
Introduction to ZK Circuits with Circom Circom is a programming language for creating Rank 1 Constraint Systems (R1CS) and populating the witness vector of the R1CS. The R1CS format is of interest...
Last updated on Apr 14, 202512 min read
Coding a Solidity rebase token A “rebase token” (sometimes “rebasing token”) is an ERC-20 token where the total supply, and the balances of token holders, can change without transfers, minting, or...
Last updated on Mar 13, 202513 min read
Q Number Format Q number format is a notation for describing binary fixed-point numbers. A fixed-point number is a popular design pattern in Solidity for storing fractional values, since the language...
Last updated on Oct 8, 2025Storage Slots of Dynamic Types (Mappings, Arrays, Strings, Bytes) Dynamic-sized types in Solidity (sometimes referred to as complex types) are data types with variable size. They include mappings,...
Last updated on Aug 20, 2025