Function pad

pad(arr: number[], length: number, num?: number): number[]
Pads an array with a specified number to a given length.
Parameters
- arr: number[]
  The array
- length: number
  The desired length of the array
- Optionalnum: number = 0
  The number to pad with (default is 0)
Returns number[]
- Defined in Chalkboard.stat.ts:901