# Integer Slice Functions ## until The `until` function builds a range of integers. ``` until 5 ``` The above generates the list `[0, 1, 2, 3, 4]`. This is useful for looping with `range $i, $e := until 5`. ## untilStep Like `until`, `untilStep` generates a list of counting integers. But it allows you to define a start, stop, and step: ``` untilStep 3 6 2 ``` The above will produce `[3 5]` by starting with 3, and adding 2 until it is equal or greater than 6. This is similar to Python's `range` function. ## seq Works like the bash `seq` command. * 1 parameter (end) - will generate all counting integers between 1 and `end` inclusive. * 2 parameters (start, end) - will generate all counting integers between `start` and `end` inclusive incrementing or decrementing by 1. * 3 parameters (start, step, end) - will generate all counting integers between `start` and `end` inclusive incrementing or decrementing by `step`. ``` seq 5 => 1 2 3 4 5 seq -3 => 1 0 -1 -2 -3 seq 0 2 => 0 1 2 seq 2 -2 => 2 1 0 -1 -2 seq 0 2 10 => 0 2 4 6 8 10 seq 0 -2 -5 => 0 -2 -4 ```