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Chris Tate
94fd361b54
Represent ordinary JavaScript arrays with hole, value, and explicit-undefined states; add sparse side storage and carry missing values through the frontend, native backends, runtime, and Node-facing consumers.
12 lines
398 B
TypeScript
12 lines
398 B
TypeScript
// Searches must jump over a billion-index hole run instead of visiting every
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// absent position. The completion itself is the regression signal.
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const high = 1_000_000_000;
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const sparse: number[] = [];
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sparse[high] = 7;
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console.log(sparse.length);
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console.log(sparse.indexOf(sparse[high]), sparse.includes(sparse[high]));
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const missing = sparse[high - 1];
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console.log(sparse.includes(missing));
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