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18 lines
363 B
TypeScript
18 lines
363 B
TypeScript
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export const arrayPartition = <T>(
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arr: T[],
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isValid: (e: T) => boolean
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): T[][] => {
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let pass: T[] = [];
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let fail: T[] = [];
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arr.forEach((e) => (isValid(e) ? pass : fail).push(e));
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return [pass, fail];
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};
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export const insertAt = <T>(arr: T[], index: number, element: T): T[] => [
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...arr.slice(0, index),
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element,
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...arr.slice(index + 1),
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];
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