dec method

Set<N> dec([
  1. N? decrementAmount
])

Decrement all values by decrementAmount.

1, 2, 3.dec() returns 0, 1, 2. 1, 2, 3.dec(2) returns -1, 0, 1. 1, 2, 3.dec(-2) returns 3, 4, 5.

decrementAmount can be positive or negative.

Implementation

Set<N> dec([N? decrementAmount]) {
  return h
      .decrementIterable(
        original: this,
        decrement: decrementAmount,
      )
      .toSet();
}