This is the sample implementation of SRFI 189: Maybe and Either.

Dependencies

This library should be portable to any R7RS Scheme. The following SRFIs are used, as well:

• SRFI 1 / (scheme list)
• SRFI 145 (optional)
• SRFI 78 (for tests) (optional)

Tests

To run the provided tests, evaluate the following in a Scheme REPL running in the source directory:

(load "189.sld")
(load "test.scm")
(check-all)

Author

Wolfgang Corcoran-Mathe wcm@sigwinch.xyz