A namespace-qualified keyword has a single colon: :my-namespace/something
The double-colon is only shorthand for the current namespace: (in-ns 'my-namespace) ::something -> :my-namespace/something Dave On Tue, Sep 17, 2013 at 4:58 PM, Casper Clausen <casp...@gmail.com> wrote: > 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.cljfor > 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> 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<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 >>> 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 >>> For more options, visit this group at >>> http://groups.google.com/**group/clojure?hl=en<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. >>> For more options, visit >>> https://groups.google.com/**groups/opt_out<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. > -- -- 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.
