Inventory tracker
Read and update a small collection, then count its contents without changing the original. Preview: a proposed inventory and its numeric total.
Runs here · LuauLoading project… · Milestone 1 of 2
Propose updated stock
Implement addStock(stock, name, amount). Clone stock with table.clone, add amount to the named entry (use 0 when missing), and return { stock = nextStock, original = stock }. Do not change the supplied stock; the checker observes both tables. Keep return addStock.
Acceptance criteria
- Implement addStock(stock, name, amount). Clone stock with table.clone, add amount to the named entry (use 0 when missing), and return { stock = nextStock, original = stock }. Do not change the supplied stock; the checker observes both tables. Keep return addStock.
- Handle the visible inputs and additional boundary cases.
Project milestones
- Available to preview
- Available to preview
Prerequisites
Optional extension
Add a read-only report of zero-stock entries. Keep the counting function reusable.
Project notes and references
Educational example. Review and redesign it for the requirements of a real project.
Your learning source is private by default. Completing this project does not grant a professional or staff role.
Run experiment shows actual behavior. Check milestone uses the acceptance criteria and records trusted progress.
Output
Your output will appear here.
Visible examples
Existing · { { keys = 2 }, "keys", 3 } → { stock = { keys = 5 }, original = { keys = 2 } }
New · { { keys = 2 }, "maps", 1 } → { stock = { keys = 2, maps = 1 }, original = { keys = 2 } }
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