Scala: Can I use -= head to remove an item from a list?

Question

It appears that using i -= i.headdoes not perform the same function as i.remove(0) on a ListBuffer. Is that right. If so why?

Answer 1

i -= i.head returns the modified ListBuffer.

i.remove(0) returns the element removed from the ListBuffer.

The resulting modified ListBuffer is the same in either case.