golang

The [strings] package adds several functions that work with iterators:

[Lines] returns an iterator over the newline-terminated lines in the string s.
[SplitSeq] returns an iterator over all substrings of s separated by sep.
[SplitAfterSeq] returns an iterator over substrings of s split after each instance of sep.
[FieldsSeq] returns an iterator over substrings of s split around runs of whitespace characters, as defined by unicode.IsSpace.
[FieldsFuncSeq] returns an iterator over substrings of s split around runs of Unicode code points satisfying f(c).