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- //Extend Array
- interface Array<T> {
- remove(filter: (v: T, i: number, arr: Array<T>) => boolean): Array<T>;
- remove(filter: T): Array<T>;
- removeOne(filter: (v: T, i: number, arr: Array<T>) => boolean): Array<T>;
- removeOne(filter: T): Array<T>;
- first(): T;
- last(): T;
- max(): T;
- max<P>(mapper: (v: T, i: number, arr: this) => P): P | null;
- min(): T;
- min<P>(mapper: (v: T, i: number, arr: this) => P): P | null;
- distinct(): Array<T>;
- filterIndex(filter: (v: T, i: number, arr: this) => boolean): Array<number>;
- count(filter: (v: T, i: number, arr: this) => boolean): number;
- sum(mapper?: (v: T, i: number, arr: this) => number): number;
- average(mapper?: (v: T, i: number, arr: this) => number): number;
- /**
- * 同find,但返回整个Array<T>中最后一个匹配元素
- */
- findLast(predicate: (value: T, index: number, obj: Array<T>) => boolean): T | undefined;
- /**
- * 同find,但返回整个Array<T>中最后一个匹配元素的index
- */
- findLastIndex(predicate: (value: T, index: number, obj: Array<T>) => boolean): number;
- //排序 返回新的数组
- orderBy(...mappers: ((v: T) => any)[]): Array<T>;
- orderByDesc(...mappers: ((v: T) => any)[]): Array<T>;
- /**
- * 二分查找 前提是数组一定是有序的
- * @param value 要查找的值
- * @param keyMapper 要查找的值的mapper方法(默认为查找数组元素本身)
- * @return 查找到的index,查不到返回-1
- */
- binarySearch(value: number | string, keyMapper?: (v: T) => (number | string)): number;
- /**
- * 二分插入 前提是数组一定是有序的
- * @param item 要插入的值
- * @param keyMapper 二分查找时要查找的值的mapper方法(默认为查找数组元素本身)
- * @param unique 是否去重,如果为true,则如果数组内已经有值时不插入,返回已有值的number
- * @return 返回插入的index位置
- */
- binaryInsert(item: T, unique?: boolean): number;
- binaryInsert(item: T, keyMapper: (v: T) => (number | string), unique?: boolean): number;
- /**
- * 二分去重 前提是数组一定是有序的
- * @param keyMapper 二分查找时要查找的值的mapper方法(默认为查找数组元素本身)
- */
- binaryDistinct(keyMapper?: (v: T) => (number | string)): Array<T>;
- groupBy(grouper: (v: T) => any): (T[] & { key: any })[];
- }
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