Babylon.js/src/Misc/arrayTools.ts

/**
 * Class containing a set of static utilities functions for arrays.
 */
export class ArrayTools {
    /**
     * Returns an array of the given size filled with element built from the given constructor and the paramters
     * @param size the number of element to construct and put in the array
     * @param itemBuilder a callback responsible for creating new instance of item. Called once per array entry.
     * @returns a new array filled with new objects
     */
    public static BuildArray<T>(size: number, itemBuilder: () => T): Array<T> {
        const a: T[] = [];
        for (let i = 0; i < size; ++i) {
            a.push(itemBuilder());
        }
        return a;
    }
}