Exercise 12: Make solution less verbose

[nik-rev]

I felt like the solution is a little too verbose. I also wanted to take this moment to appreciate the ??= operator, I think learners will find it interesting at least :>

[MaoShizhong]

I like this approach as a whole but personally I'd prefer it as a commented-out alternative solution, since there's absolutely nothing wrong with the current solution. A single alternative solution of relatively similar and reasonable complexity, I think is reasonable for the last exercise of the section.

Additionally, while defining getAge after findTheOldest works perfectly fine (because getAge is only actually called after it's defined) in the original, I agree it just reduces confusion to define it first. Could you also swap the order in the original solution?

Could you also amend this exercise's README 2nd hint to something like

This can be done using any variety of array methods, such as reduce, or even chaining multiple together.

[MaoShizhong]

🚀