Gas Optimizations

[code423n4]

• <x> += <y> costs more gas than <x> = <x> + <y> for state variables (- too)
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/modules/PRICE.sol#L136
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/modules/PRICE.sol#L138
• Using private rather than public for constants, saves gas
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Operator.sol#L89
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Governance.sol#L121
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Governance.sol#L124
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Governance.sol#L127
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Governance.sol#L130
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Governance.sol#L133
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Governance.sol#L137
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/modules/PRICE.sol#L59
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/modules/RANGE.sol#L65
• ++i costs less gas than ++i, especially when it is used in for-loop
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/utils/KernelUtils.sol#L49
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/utils/KernelUtils.sol#L64
  • https://github.com/code-423n4/2022-08-olympus/blob/main/src/policies/Operator.sol#L488