golf-course
A list of common Solidity optimization tips and myths.
Tips
Right Shift Instead of Dividing By 2
The SHR opcode is 3 gas cheaper than DIV and also bypasses Solidity's division by 0 prevention overhead.
// Unoptimized:
uint256 two = 4 / 2;
// Optimized:
uint256 two = 4 >> 1;