Thank you for replying. I see that using :require like (:require [random.learning.clojure.overridex :as o]) also means I have to use sorted? as "o/sorted?" else the clojure.core/sorted? is used or using (:require [random.learning.clojure.overridex]) means I've to use "random.learning.clojure.overridex/sorted?". This is actually something I was trying to avoid. I mean, I still want to use just "sorted?" and simply by somehow including another namespace (require/use/refer whichever way) in my namespace declaration then the implementation of "sorted?" would be different as dictated by this included namespace (supposed I could switch between the two, or even just not include any and have it be clojure.core variant of "sorted?")
What I forgot to mention is that I've tried the (:refer-clojure :exclude [sorted?]) variant in the new namespace but I was still unable to get rid of the errors. But maybe this is now just a ccw bug and this is indeed the right way for me to do thing if I really wanted the behavior that I mentioned. (ns random.learning.clojure.usetheoverridexns (:refer-clojure :exclude [sorted?]) (:use random.learning.clojure.overridex) (:refer-clojure :exclude [sorted?]) ) (and (= false (sorted? '(1 2))) (= true (sorted? (sorted-set 1 2)))) First time loading this in a new repl yields: ;; Clojure 1.5.0-RC16 ;; Switching to random.learning.clojure.usetheoverridexns namespace true IllegalStateException sorted? already refers to: #'random.learning.clojure.overridex/sorted? in namespace: random.learning.clojure.usetheoverridexns clojure.lang.Namespace.warnOrFailOnReplace (Namespace.java:88) it's not too bad, and any successive loads just show true The only thing is that if I switch to another namespace while repl is running I can't ever switch back due to the error: ;; Switching to random.learning.clojure.overridex namespace nil => *ns* #<Namespace random.learning.clojure.overridex> ;; Switching to random.learning.clojure.usetheoverridexns namespace IllegalStateException sorted? already refers to: #'random.learning.clojure.overridex/sorted? in namespace: random.learning.clojure.usetheoverridexns clojure.lang.Namespace.warnOrFailOnReplace (Namespace.java:88) => *ns* #<Namespace random.learning.clojure.overridex> I've already reported the ccw issue here: https://code.google.com/p/counterclockwise/issues/detail?id=528&sort=-id So, I'll keep using this variant (:refer-clojure :exclude [sorted?]) for now, thank you Anthony. Btw, is there a way to not implicitly include clojure.core or to have it aliased :as cc for example so that I would have to always cc/sorted? if I wanted to use clojure.core and any others from it ? Even if this were possible, I wouldn't be able to just plug in a different implementation of "sorted?" and easily choose between the: namespace1, namespace2 and clojure.core 's implementation of "sorted?" because I would have to at least change from cc/sorted? to nsany/sorted? where depending on which namespace I import they can be aliased ":as nsany" but clojure.core would always be a different alias ":as cc". thx On Thu, Feb 14, 2013 at 7:52 PM, Anthony Grimes <disciplera...@gmail.com>wrote: > The problem is that your first namespace defines 'sorted?' and your second > namespace just uses the namespace, thus overriding 'sorted?'. You have two > options here. Your biggest project is that you're using ':use'. Use > ':require' instead. Something like `(:require > [random.learning.clojure.**overridex > :as overridex])`. Your second option is to do the :refer-clojure dance in > this namespace as well, but really you should just use :require and qualify > the namespace. > > On Thursday, February 14, 2013 10:04:55 AM UTC-8, AtKaaZ wrote: >> >> Let's say I want to override clojure.core/sorted? >> >> (ns random.learning.clojure.**overridex >> (:refer-clojure :exclude [sorted?])) >> >> (defn sorted? [coll] >> {:pre [ (coll? coll)]} >> (clojure.core/sorted? coll)) >> >> I'm using Eclipse+counterclockwise, so loading this namespace(Ctrl+Alt+L) >> first time gives no warnings/errors, loading it second time, one warning >> and no errors, and subsequent times it's loaded there are no >> errors/warnings. >> >> the warning is this: >> WARNING: sorted? already refers to: #'clojure.core/sorted? in namespace: >> random.learning.clojure.**overridex, being replaced by: >> #'random.learning.clojure.**overridex/sorted? >> >> I could ignore the warning, no problem, but then I try to use this >> namespace in another namespace: >> >> (ns random.learning.clojure.**usetheoverridexns >> (:use random.learning.clojure.**overridex) >> ) >> >> (and >> (= false (sorted? '(1 2))) >> (= true (sorted? (sorted-set 1 2)))) >> >> >> When I load this namespace first time I get: >> WARNING: sorted? already refers to: #'clojure.core/sorted? in namespace: >> random.learning.clojure.**usetheoverridexns, being replaced by: >> #'random.learning.clojure.**overridex/sorted? >> true >> I could ignore that, but then I load it again(and any subsequent time) >> and this is an error (not just a warning that can be ignored): >> >> IllegalStateException sorted? already refers to: >> #'random.learning.clojure.**overridex/sorted? in namespace: >> random.learning.clojure.**usetheoverridexns >> clojure.lang.Namespace.**warnOrFailOnReplace >> (Namespace.java:88) >> >> Notice there's no "true" aka return value. >> >> When I actually close the REPL, and Ctrl+Alt+L load only this latter >> namespace I get this: >> >> ;; Clojure 1.5.0-RC16 >> ;; Switching to random.learning.clojure.**usetheoverridexns namespace >> WARNING: sorted? already refers to: #'clojure.core/sorted? in namespace: >> random.learning.clojure.**usetheoverridexns, being replaced by: >> #'random.learning.clojure.**overridex/sorted? >> true >> *IllegalStateException sorted? already refers to: >> #'random.learning.clojure.overridex/sorted? in namespace: >> random.learning.clojure.usetheoverridexns >> clojure.lang.Namespace.warnOrFailOnReplace >> (Namespace.java:88)* >> >> >> and any subsequent loads, show only the part in bold. >> >> While this may be some ccw issue, I am probably also doing something >> wrong that I could be doing better. >> What is the way to do this? especially in the latter namespace which is >> using the namespace which has overridden the sorted? >> I do want the overridden "sorted?" to actually be available and override >> the clojure.core/sorted? in any namespaces that are using the overridex >> namespace. >> >> >> Thank you. >> >> -- >> Please correct me if I'm wrong or incomplete, >> even if you think I'll subconsciously hate it. >> >> -- > -- > 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. > > > -- Please correct me if I'm wrong or incomplete, even if you think I'll subconsciously hate it. -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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