Parse range of indexes to var (eg. "2-4" or "5-1")
Note: If the range "a-b" is reversed (a > b), it's mean two ranges: "a-until", "from-b"
See Implementation
Parse range of indexes to var (eg. "2-4" or "5-1")
Note: If the range "a-b" is reversed (a > b), it's mean two ranges: "a-until", "from-b"