The Recursion Awakens: Knowing When to Call Yourself

Short summary

When solving nested or hierarchical problems, recursion can provide cleaner code than manual iteration. The author proposes a two-question litmus test: Can your solution decompose into smaller instances of itself? Will recursion depth stay bounded? Applied to JSON flattening, recursion eliminates manual stack management and reduces cognitive load compared to imperative loops.

• •Recursion shines when a problem naturally decomposes into smaller versions of itself
• •Two-question test: Does the solution rely on solving smaller pieces? Is recursion depth bounded?
• •JSON flattening example shows recursive approach is cleaner and more readable than manual stack iteration

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