Subtract an array from another array of unequal length

Shubhreet

Hello,

does anyone knows how to subtract and array from another array of unequal length.  In other words, I am trying to remove a subset from an array.

For example, let array1 = [1, 3 , 5 ,6] and array2 =[3, 6] and the desired result = array1 - array2 = [1, 5]. 

kenbuja

You can use the Filter function

var array1 = [1,3,5,6]
var array2 = [3,6]
function exists(i){
  return !Includes(array2, i)
}
return Filter(array1, exists)