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arquero

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Query processing and transformation of array-backed data tables.

github.com/uwdata/arquero

uwdata/arquero

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/** * Generate a table expression that filters a table based on ordered row * indices from start to end (end not included), where start and end * represent per-group ordered row numbers in the table. The resulting * string can be used as the input to the filter verb. * @param {number} [start] Zero-based index at which to start extraction. * A negative index indicates an offset from the end of the group. * If start is undefined, slice starts from the index 0. * @param {number} [end] Zero-based index before which to end extraction. * A negative index indicates an offset from the end of the group. * If end is omitted, slice extracts through the end of the group. * @return {string} A table expression string for slicing values. * @example slice(1, -1) */ export function slice(start?: number, end?: number): string;