upTo method Null safety

IntRange upTo(
  1. int to,
  2. {int from = 0,
  3. int step = 1}
)

Factory method to create a progression in which the maximum value is to, with an optional minimum value from which defaults to 0, and a common difference of step which defaults to 1.

Example:

Range.upTo(2) // => 0, 1, 2
Range.upTo(5, from: 1, step: 2) // => 1, 3, 5

Implementation

static IntRange upTo(int to, {int from = 0, int step = 1}) =>
    IntRange(from, to, step: step);