Indexing & Counting

Find positions, count occurrences

Function	What it does
strings.Count	Count non-overlapping occurrences of substring
strings.Index	First index of substring (-1 if not found)
strings.IndexAny	First index of any character from chars
strings.IndexByte	First index of byte
strings.IndexRune	First index of rune
strings.LastIndex	Last index of substring
strings.LastIndexAny	Last index of any character from chars
strings.LastIndexByte	Last index of byte