value rx/anchor-at-start : string?

procedure (rx/string-prefix expr) → string?   expr : string?

> (rx/string-prefix "Hello")

"^Hello"

value rx/anchor-at-end : string?

procedure (rx/string-suffix expr) → string?   expr : string?

> (rx/string-suffix "goodbye")

"goodbye$"

procedure (rx/string-exactly expr) → string?

expr : string?

> (rx/string-exactly "Hello and Goodbye")

"^Hello and Goodbye$"