hardOpenAI

Implement a resumable iterator with getState() and setState(), then make it span multiple files

An OpenAI bank regular: next() over a list, then save/restore position, then resume across multiple JSON files where some are empty. The whole question is one decision (what counts as state) and most candidates get it wrong on part one.

Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

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