mirror of
https://gitcode.com/gh_mirrors/hy/Hydro.git
synced 2026-10-18 17:38:19 +08:00
15 lines
361 B
TypeScript
15 lines
361 B
TypeScript
function* ranked<T>(diter: T[], equ = (a: T, b: T) => a === b): Generator<[number, T], void> {
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let last = null;
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let r = 0;
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let count = 0;
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for (const doc of diter) {
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count++;
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if (count === 1 || !equ(last, doc)) r = count;
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last = doc;
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yield [r, doc];
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}
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}
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global.Hydro.lib.rank = ranked;
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export default ranked;
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