Key Takeaways

We’ll meet developers who don’t think const is helpful and who argue against this practice. We’ve learned about their arguments and how to respond to them:

• const is not visual noise because it doesn’t repeat information
• const is not confusing if used correctly, and we can use it even if it has not been used in the codebase before
• const will not harm performance, and in fact can help the compiler to optimize results if it is used correctly