Rewritten
This counts how many times each value appears in the array `arr`. It builds an object where each key is a value from the array and each value is its count — starting from an empty object and, for every element, incrementing that element's tally (defaulting to 0 the first time it's seen).
About this tool
Sometimes you inherit a snippet — from a coworker, a Stack Overflow answer, or a codebase you just joined — and need to know what it actually does before trusting it. This tool translates code into a plain-English explanation aimed at a developer who's competent but unfamiliar with this particular block. It walks through the logic and the point of it, without assuming you already know the surrounding context. It's especially handy for dense one-liners, unfamiliar library calls, or clever code that isn't self-explanatory.
Frequently asked questions
Can it explain code in any language?+
Yes — it handles common languages and infers the language from the snippet. Very niche or domain-specific languages may get a more general explanation.
Does it explain line by line or overall?+
It focuses on what the code accomplishes as a whole, mentioning specific lines only where they're key to understanding the logic.
Is this good for learning?+
Yes — it's a fast way to understand unfamiliar patterns, though pairing it with the language's docs deepens the takeaway.