Jan 29, 2025 · The place to discuss design and usage of and changes to the Solidity programming language.

Dec 27, 2019 · For multiple inheritance, the most derived base contracts that define the same function must be specified explicitly after the override keyword. Functions with the private …

What does the "indexed" keyword do in the below line of code? I'm guessing it just tells the event object that the following input should be logged? Can we use it other places ie outside of event...

Jul 4, 2017 · The difference is because in public functions, Solidity immediately copies array arguments to memory, while external functions can read directly from calldata. Memory …

May 15, 2023 · I'm new to Solidity and it's my first try to write a smart contract using Openzeppelin, Pancakeswap and BEP20 libraries basically to make a BEP-20 token. When i …

Mar 1, 2016 · I've been looking through the code of Etherdice and noticed that some variables are declared like ParserResult memory result; and I haven't found the keyword …

Solidity implements a formal verification approach based on SMT (Satisfiability Modulo Theories) and Horn solving. The SMTChecker module automatically tries to prove that the code satisfies …

Solidity allows you to returns the struct linking it to a keywords: memory or calldata, that means the data area where variables must store. NOTE: If you change the visibility about a specific …

msg.value is a member of the msg (message) object when sending (state transitioning) transactions on the Ethereum network. msg.value contains the amount of wei (ether / 1e18) …

Q&A for users of Ethereum, the decentralized application platform and smart contract enabled blockchain