1.90.1 Interval class: instance creation

from: startInteger to: stopInteger

Answer an Interval going from startInteger to the stopInteger, with a step of 1

from: startInteger to: stopInteger by: stepInteger

Answer an Interval going from startInteger to the stopInteger, with a step of stepInteger

withAll: aCollection

Answer an Interval containing the same elements as aCollection. Fail if it is not possible to create one.