There is actually a out of the box way to do this - but it's not through the core.logic.
What you want to do is to use the java_interlop to import and use http://commons.apache.org/proper/commons-net/apidocs/org/apache/commons/net/util/SubnetUtils.html On Monday, 24 June 2013 12:01:40 UTC-4, David Rocamora wrote: > > Hi, > > I've been exploring core.logic while working through The Reasoned Schemer > and would like to be able to describe relationships between IP addresses > and networks that they may or may not be a part of. It's straightforward to > do this in Clojure because I can use bit-and on a network and a mask and on > an IP and a mask. If the results are the same, then the IP is in the > network. At least, that is how I understand it. Here's a predicate function > that does this: > > >> (defn in-network? > > [address network netmask] > > (= (map bit-and network netmask) > > (map bit-and address netmask))) > > >> ;; 192.168.1.3 is in 192.168.1.0/24 > > > > (in-network? > > [192 168 1 3] > > [192 168 1 0] > > [255 255 255 0]) ;; true > > > > ;; but 192.168.100.3 isn't > > > > (in-network? > > [192 168 100 3] > > [192 168 1 0] > > [255 255 255 0]) ;; false > > > It would be cool to be able to do this with core.logic so I could have a > relationship like in-networko that could describe IPs and networks. I'm > running into issues implementing this because lvars aren't supported by the > bitwise operators from Clojure and I can't seem to find anything in > core.logic that does what I need out of the box. The Reasoned Schemer > describes a bunch of bitwise operations, but implementing them seems like > it will involve a lot of work to turn the integers from an IP into lists of > bits and back again. Is there a better way to do this? Any insight would be > appreciated. > > Thanks in advance, > Dave > -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
