Thanks, Juan.
I don't need to know the length of the seq, though, only that it is lazy. I
don't want to realize *any* lazy seqs. Ideally, I'd like to be able to
print any data structure and have all lazy seqs print just like it does in
the example I gave above (i.e.,
Cool! Thanks for sharing, I was looking for a simple web-server
prototype in order to study its internal.
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> The next step might be to investigate why infinite lazy seqs don't print as
> clojure.lang.LazySeq, like the finite ones.
that printing of "clojure.lang.LazySeq@c5d38b66" relies on completely
realizing the input, as it relies on the hash, which relies on the
fully realized value
On Mon, Nov
hit send too soon --
also, that print-method doesn't catch all lazy values
user=> (instance? clojure.lang.LazySeq (range))
false
user=> (supers (class (range)))
#{java.lang.Iterable java.util.List clojure.lang.Obj
clojure.lang.IPending java.io.Serializable clojure.lang.IHashEq
Hi Austin,
Since there is no way to know the length of a lazy-seq without realizing
it, I think your only choice is to set a limit on it by binding
*print-length* if you are not sure about the sequence.
Other thing you can try is bounded-count like this :
(defn looks-finite? [xs]
(let
Here is the meeting's video:
https://youtu.be/dayMZjQcVaY
Note that the text chat was quite lively -- see the link at the video
description.
Many thanks to Sivaram Arabandi and Pier Federico Gherardini for the talks,
to Lacey Kitch who kept clarifying things at the text chat, and to João
Thanks, Justin!
Yeah, I noticed that range doesn't return an instance of
clojure.lang.LazySeq, so I added a print-method for clojure.lang.Iterate.
And that one seems to work as expected, but apparently you can't override
the print-method for clojure.lang.LazySeq.
But this doesn't seem like a
