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 visibility cannot be …

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 "memory" in …

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 allocation is expensive, …

Apr 29, 2017 · Is it possible, from within a contract written in Solidity, to check if a contract is placed on a specific address or if this address does not contain any code?

I have a mapping like this: struct data { string name; string nickname; } mapping (address => data) public user; What is the correct way to delete one element from the variable user...

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 try to deploy the smart …

I saw a Solidity smart contract where some variables were declared with the type address and some were declared with the type address payable. What are the differences between the two? Do they stor...

Integers in Solidity: uint256 (uint is an alias) is a unsigned integer which has: minimum value of 0 maximum value of 2^256-1 ...