Xstr is an ocaml library for string operations.

this package implements frequent string operations: searching, replacing, splitting, matching. it is independent from the str library, and can replace str in many cases. unlike str, xstr is thread-safe. xstr does not implement regular expressions in general, but an important subset. some operations of xstr are performed as quickly as by str; if the string to be processed is small, xstr is often faster than str; if the string is big, xstr is up to half as fast than str.