subtraction method

List subtraction(
  1. List list1,
  2. List list2
)

Function is used when we want to compute the difference of two array.

var sub = m2d.subtraction([[1,1],[1,1]],[[2,2],[2,2]]);
print(sub);
//[[-1,-1],[-1,-1]]

Implementation

List subtraction(List list1, List list2) {
  var list1Shape = shape(list1);
  var list2Shape = shape(list2);
  if (list1Shape.toString() != list2Shape.toString()) {
    throw new Exception(
        'operands could not be broadcast together with shapes $list1Shape $list2Shape');
  }
  var result = utlsubtraction(list1, list2);
  return result;
}