String
A Unicode string, such as "hello world".
"hello world"
struct String { __BUILT_IN_IMPLEMENTATION: NoValue, }
as_int()
chars()
contains()
ends_with()
index_of()
join()
len()
lines()
replace()
split()
split_once()
starts_with()
strip_prefix()
strip_suffix()
substring()
trim()
trim_left()
trim_right()