- after
- after_ci
- after_last
- after_last_ci
- before
- before_ci
- before_last
- before_last_ci
- capitalize
- capitalize_words
- chr
- chunk
- compare
- compare_ci
- contains
- contains_ci
- ends_with
- ends_with_ci
- length
- lowercase
- ord
- pad_left
- pad_right
- range
- replace
- replace_ci
- replace_every
- replace_every_ci
- reverse
- rot13
- search
- search_ci
- search_last
- search_last_ci
- shuffle
- slice
- splice
- split
- starts_with
- starts_with_ci
- strip_prefix
- strip_suffix
- trim
- trim_left
- trim_right
- uppercase
- words
- wrap