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> wrote: > > On Jun 22, 2015, at 2:39 PM, Ritchie Cai <ritchie...@gmail.com> 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 > 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 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. > 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.
