Making Solidity Values Constant Where Possible #16
Description
Constant variables are replaced at compile time by their values, while immutable variables are replaced at deployment time. Either way, we avoid the annoying fees required with doing an SLOAD operation.
They are replaced with literals at compile time and will prevent you from having to a read a value from memory or storage. For writing Yul - replace all known values and constant values with literals to save gas and comment what they are.