Try including [*print-dup* true] in the binding;
(defn write-nick-sets [file-name obj]]
(with-open [w (FileWriter. (File. file-name))]
(binding [*out* w *print-dup* true] (prn obj))))
You can read it back with;
(defn rec-load
"Load a clojure form from file"
[#^File file]
(with-open [r (PushbackReader. (FileReader. file))]
(let [rec (read r)]
rec)))
See clojure.core_print.clj in the clojure source for details.
-Regards, Adrian.
On Thu, Feb 25, 2010 at 5:17 AM, NovusTiro <novust...@gmail.com> wrote:
> I'm trying to prn a large data structure to a file so I can later read
> it back in, like so -
>
> (defn write-nick-sets [file-name obj]
> (binding [*out* (java.io.FileWriter. file-name)]
> (prn obj)))
>
> obj here is a map with a string as its key and another map as its
> value. The nested map has a list as its key and a set as its value.
> When I prn the structure to a file as above, it doesn't print out all
> my data, only 40 key-value pairs for each nested map are printed, and
> an ellipsis is inserted after them (I guess to represent the
> remainder).
>
> Anyone know what I'm doing wrong here? How can I print the whole data
> structure to a file, in a way that the reader can understand?
>
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