I always have (:use clojure.core) in a new namespace. Is that necessary or is clojure.core is automatically interned when a new namespace is created?
> On Jun 23, 2015, at 6:37 AM, Gary Verhaegen <gary.verhae...@gmail.com> wrote: > > Unless you have a very compelling reason, just don't use use. It's mostly a > historical accident that's kept there for backwards compatibility. > > And try to avoid :refer :all if possible. There are legitimate use-cases for > it, but outside the REPL they are pretty rare. > > On Tuesday, 23 June 2015, Ritchie Cai <ritchie...@gmail.com > <mailto:ritchie...@gmail.com>> wrote: > Ah, I see. I thought “use :as” will not intern all the symbols into current > namespace, apparently that’s not the case. > Thanks for clearing this up. > > Ritchie > > > On Jun 22, 2015, at 4:52 PM, Sean Corfield <s...@corfield.org > > <javascript:;>> wrote: > > > > On Jun 22, 2015, at 2:39 PM, Ritchie Cai <ritchie...@gmail.com > > <javascript:;>> wrote: > >> Ok, so require without :refer will default to :refer :all? > > > > No. > > > >>> (:use [clojure.java.io <http://clojure.java.io/>]) is equivalent to > >>> (:require [clojure.java.io <http://clojure.java.io/> :refer :all]) > > > > There’s no :as here. :use is like :require :refer :all. > > > >>> (:use [clojure.java.io <http://clojure.java.io/> :as io]) is equivalent > >>> to (:require [clojure.java.io <http://clojure.java.io/> :as io :refer > >>> :all]) > > > > There’s an :as in both here. :use :as is like :require :as :refer :all > > > > Both :use and :refer :all (in :require) are discouraged because they > > pollute your namespace with every symbol from the used/required namespace. > > > > There’s not much point in specifying an alias (with :as) for :use or > > :require :refer :all since those bring in every symbol directly anyway. > > > > Sean Corfield -- (904) 302-SEAN > > An Architect's View -- http://corfield.org/ <http://corfield.org/> > > > > "Perfection is the enemy of the good." > > -- Gustave Flaubert, French realist novelist (1821-1880) > > > > > > > > -- > > 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 <javascript:;> > > 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 <javascript:;> > > For more options, visit this group at > > http://groups.google.com/group/clojure?hl=en > > <http://groups.google.com/group/clojure?hl=en> > > --- > > You received this message because you are subscribed to a topic in the > > Google Groups "Clojure" group. > > To unsubscribe from this topic, visit > > https://groups.google.com/d/topic/clojure/ned76MpB-W0/unsubscribe > > <https://groups.google.com/d/topic/clojure/ned76MpB-W0/unsubscribe>. > > To unsubscribe from this group and all its topics, send an email to > > clojure+unsubscr...@googlegroups.com <javascript:;>. > > For more options, visit https://groups.google.com/d/optout > > <https://groups.google.com/d/optout>. > > -- > 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 <javascript:;> > 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 <javascript:;> > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > <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 <javascript:;>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > -- > 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 > <http://groups.google.com/group/clojure?hl=en> > --- > You received this message because you are subscribed to a topic in the Google > Groups "Clojure" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/clojure/ned76MpB-W0/unsubscribe > <https://groups.google.com/d/topic/clojure/ned76MpB-W0/unsubscribe>. > To unsubscribe from this group and all its topics, send an email to > clojure+unsubscr...@googlegroups.com > <mailto:clojure+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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