ERC20 Code Style Findings

ERC-01C: Variable Mutability Specifier

Description:

As the ERC20 token implementation is used internally, the _decimals member is only set once during the constructor of the contract.

Example:

Copy
26uint8 internal _decimals;
27
28constructor (string memory name_, string memory symbol_, uint8 decimals_) {
29    _name = name_;
30    _symbol = symbol_;
31    _decimals = decimals_;
32}

Recommendation:

We advise it to be set as immutable greatly opimizing its read access gas cost.

Alleviation:

The _decimals member was properly set as immutable.