You can also create new types that act mostly like Clojure's existing
types using deftype and implementing things like IPersistentStack.
I posted code for (among other things) a bounded deque (using a
ringbuffer internally) here fairly recently.
The one limitation with these things is that they d
The code from my previous post is not correct, cons for example
affects metadata:
(def q (bounded-queue 3))
(meta q) -> { :bounded-size 3}
(meta (cons 1 qm)) -> nil
On Feb 17, 3:19 pm, pba wrote:
> Combining the two approaches:
> (defn bounded-queue [size]
> (with-meta (clojure.lang.Persisten
Combining the two approaches:
(defn bounded-queue [size]
(with-meta (clojure.lang.PersistentQueue/EMPTY) {:bounded-size
size}))
then look for (get (meta q) :bounded-size) in the protocol. Nice ...
Thanks!
On Feb 17, 11:04 am, Alexandre Patry
wrote:
> On 11-02-17 10:33 AM, pba wrote:> Not qui
On 11-02-17 10:33 AM, pba wrote:
Not quite, the queue size needs to be passed in at instantiation time
for example you may want to have a 10 or 100 element queue depending
on the element type. What I'm looking for is to somehow decorate the
queue (or some other object) with behavior constraints (
Not quite, the queue size needs to be passed in at instantiation time
for example you may want to have a 10 or 100 element queue depending
on the element type. What I'm looking for is to somehow decorate the
queue (or some other object) with behavior constraints (a la C++
traits) when the object is
> Is there a better way to specialize an built-in Clojure collection
> except wrapping - like for example to create a fixed size queue that
> drops new elements while full ?
You can use protocols as in the example at https://gist.github.com/831830
Is this what you were looking for?
--
You recei
Is there a better way to specialize an built-in Clojure collection
except wrapping - like for example to create a fixed size queue that
drops new elements while full ?
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