Solidity

Understanding Solidity receive and fallback functions - essential mechanisms for handling plain Ether transfers and unknown function calls in smart contracts.

Master the different ways to represent hexadecimal values in Solidity, from basic hex literals to bytes representations, and understand when to use each format.

Understanding Solidity data locations is essential for writing efficient smart contracts. Learn the differences between storage, memory, and calldata, and how they affect gas costs and variable behavior.