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1cl-kanren

Cl-kanren An implementation of miniKanren wrappend around an implementation of microKanren.

In short is a library for embed logic programming in your common lisp software.

1.1Usage

1.1.1install

Cl-kanren is included in quicklisp so

(ql:quickload "cl-kanren")

Actual use of logic programming needs some more words than a reasonably short README file can accomodate.

My suggestion is to start pointing your browser to

microKanren.org, there are a lot of resouces there.

1.1.2Difference from the cl-kanren-trs

• there is no conde, it has been replaced by condi;
• = is actually =-check;

1.2Credits

cl-kanren is an implementation of miniKanren, the language discussed in "The Reasoned Schemer"[fn:trsch]

2BUGS

Please file bug report on the issue tracker

3License

Copyright © 2016, cage All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright

notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright

notice, this list of conditions and the following disclaimer in thedocumentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Some portions of the code uses works (c) 2008, Matthew Swank, with the original license stated below

Copyright (c) 2008, Matthew Swank All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright

notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright

notice, this list of conditions and the following disclaimer in thedocumentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

4Acknowledgment

Many thanks to Jason Hemann, his works for Lambda Jam 2014 inspired a few forms in this implementation.

[fn:trsch] "The Reasoned Schemer", Friedman, Byrd and Kiselyov. 2005, MIT Press