- string-filterprocedure
- string-removeprocedure
Filter the string s, retaining only those characters that satisfy / do not satisfy pred.
If the string is unaltered by the filtering operation, these functions may return either s or a copy of s.
Compatibility note: string-remove is identical to the string-delete procedure of SRFI 13, but the name string-delete is inconsistent with the conventions of SRFI 1 and other SRFIs.