The double colon keyword creates a namespaced keyword and is perfectly valid syntax. It's just not used that often :)
By default a keyword like ::test resolves to the current namespace like ::current-ns/test, but you can also provide another ns which causes the problem when reading. Have at look at https://github.com/clojure/core.logic/blob/0d1d545f0a81c585c7449aecb5d661120f3da568/src/main/clojure/clojure/core/logic/fd.clj for instance. On Wednesday, September 18, 2013 1:05:01 AM UTC+2, daveray wrote: > > Hey, > > You have too many colons: > > user=> (read-string ":l/test") > :l/test > > > Dave > > > > On Tue, Sep 17, 2013 at 4:03 PM, Casper Clausen <cas...@gmail.com<javascript:> > > wrote: > >> I am reading a bunch of clojure files using the build-in reader (or >> tools.reader, it has the same problem) and I am running into a problem >> regarding namespaced keywords (is that the right term?) such as ::l/test. >> >> => (read-string "::l/test") >> RuntimeException Invalid token: ::l/test >> clojure.lang.Util.runtimeException (Util.java:219) >> >> It seems that the reader requires the namespace alias 'l' to exist. This >> is a shame because in most (all?) other respects the reader is able to just >> read in the symbols even if their namespace is not loaded. So in order for >> me to read a file with a namespaced keyword I need to eval at least the ns >> form of the file, which then requires me to eval the ns forms of its >> dependencies (and so on). My code is basically building on the excellent >> codeq analyzer ( >> https://github.com/Datomic/codeq/blob/master/src/datomic/codeq/analyzers/clj.clj), >> >> so I am guessing this would have the same problem when running into a >> similar namespaced keyword. >> >> So my question is how do I best get around this? >> >> -- >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com<javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> 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+u...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- -- 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.
