24 lines
787 B
TypeScript
24 lines
787 B
TypeScript
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/**
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* 集合分组统计,返回各组中对象的数量统计
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* @param list 对象
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* @param iterate 回调/属性
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* @param context 上下文
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*/
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export declare function countBy<T, C = any>(list: T[], iterate: string | number | ((this: C, item: T, index: number, list: T[]) => string | number), context?: C): { [key: string]: number };
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/**
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* 集合分组统计,返回各组中对象的数量统计
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* @param obj 对象
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* @param iterate 回调/属性
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* @param context 上下文
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*/
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export declare function countBy<T, C = any>(obj: T, iterate: string | number | ((this: C, item: any, key: string, obj: T) => string | number), context?: C): { [key: string]: number };
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declare module './ctor' {
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interface XEUtilsMethods {
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countBy: typeof countBy;
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}
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}
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export default countBy
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