Building Ranges

A range represents an ordered sequence of evenly spaced integers, like 1, 2, 3, 4, 5.

Ranges are memory efficient because they store only the start, end, and step, not every number. They are ideal for counting and looping.

The simplest range uses to, which includes both endpoints.

So 1 to 5 covers 1, 2, 3, 4, and 5. The final number is part of the range.