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> 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]) is equivalent to (:require [clojure.java.io > :refer :all]) > > > > There’s no :as here. :use is like :require :refer :all. > > > >>> (:use [clojure.java.io :as io]) is equivalent to (:require [ > 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/ > > > > "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 > > --- > > 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. > > 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. > > -- > 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 > --- > 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. > -- 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/d/optout.
