Constant vs Immutable

1. constant: Declares a constant that must be initialized at the time of declaration and cannot be altered thereafter.

2. immutable: Declares a constant that can be initialized either at the time of declaration or within the constructor, and cannot be altered after deployment.

3. variable: Declares a variable that can be assigned and modified at any stage of the contract lifecycle.

The following examples illustrate three variables defined with different modifiers.

Recommendations for gas optimization:

🌟 Using variables consumes more gas, so avoid them if you can.

🌟 For constants that do not require modifications after deployment, defining them as immutable is optimal both functionally and in terms of gas efficiency.