On Monday, December 8, 2014 2:26:42 AM UTC-5, Andy Fingerhut wrote: > > In regards to your question "Why isn't this documented anywhere?", it is > documented somewhere -- in the documentation string for clojure.edn/read, > the very function you were attempting to use: > > user=> (doc clojure.edn/read) > ------------------------- > clojure.edn/read > ([] [stream] [opts stream]) > Reads the next object from stream, which must be an instance of > java.io.PushbackReader or some derivee. stream defaults to the > current value of *in*. >
What's *not* documented is that io/reader doesn't output something that edn/read can use directly, nor is there documented an officially recommended workaround for this. AFAICT just wrapping the reader output in "(java.io.PushbackReader. ...)" works. Still, this is awkward, verbose, and prevents the (nontrivial) use of edn in a platform-neutral way by referring only to Clojure functions without direct interop. Well, except for the even more awkward workaround of slurp and read-string, with the accompanying need to hold the entire file in memory *twice* for a short time. As far as why it requires a PushbackReader, I didn't design the API. Yes, > some things in Clojure require using Java interop, and in many (but not > all) cases, file I/O requires it. > Perhaps io/reader should output a PushbackReader, if only for convenience's sake. Also, how does this work on ClojureCLR or ClojureScript? Neither of those platforms has a java.io.PushbackReader, and I'm not even sure what the equivalent of the clojure.java.io namespace is for them, unless the "java" in that name is misleading. -- 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/d/optout.
