Method each

src/data/DataStore.ts:1100–1133

* Data iteration * @param ctx default this * @example * list.each(0, function (x, idx) {}); * list.each([0, 1], function (x, y, idx) {}); * list.each(function (idx) {})

(dims: DimensionIndex[], cb: EachCb)

     *  list.each(function (idx) {})
     */
    each(dims: DimensionIndex[], cb: EachCb): void {
        if (!this._count) {
            return;
        }
        const dimSize = dims.length;
        const chunks = this._chunks;

        for (let i = 0, len = this.count(); i < len; i++) {
            const rawIdx = this.getRawIndex(i);
            // Simple optimization
            switch (dimSize) {
                case 0:
                    (cb as EachCb0)(i);
                    break;
                case 1:
                    (cb as EachCb1)(chunks[dims[0]][rawIdx], i);
                    break;
                case 2:
                    (cb as EachCb2)(
                        chunks[dims[0]][rawIdx], chunks[dims[1]][rawIdx], i
                    );
                    break;
                default:
                    let k = 0;
                    const value = [];
                    for (; k < dimSize; k++) {
                        value[k] = chunks[dims[k]][rawIdx];
                    }
                    // Index
                    value[k] = i;
                    (cb as EachCb).apply(null, value);
            }
        }
    }

    getDataExtent(
        dim: DimensionIndex,