This is one of the most common examples of the need for recursive functions. Recursive functions, at their simplest, are functions that call themselves. These types of functions are used in the ...

What's the word on recursion in production code ... for production code. If a function is easier to conceptually visualize recursively (tree/graph searches, for example), I'll do it that way ...

A properly tail-call-optimized recursive function is mostly equivalent to an iterative loop at the machine code level. Another consideration is that iterative loops require destructive state ...