http://clojuredocs.org Fri, 17 May 2013 10:14:47 GMT Recently updated examples and comments from ClojureDocs.org. http://clojuredocs.org/clojure_core/clojure.core/into-array ;;&nbsp;Array's&nbsp;component&nbsp;type&nbsp;is&nbsp;set&nbsp;to&nbsp;(class&nbsp;2),&nbsp;cannot&nbsp;add&nbsp;Strings.<br&nbsp;/>;;&nbsp;This&nbsp;will&nbsp;result&nbsp;in&nbsp;an&nbsp;IllegalArgumentException<br&nbsp;/>user=>&nbsp;(into-array&nbsp;[2&nbsp;"4"&nbsp;"8"&nbsp;5])<br&nbsp;/>;;&nbsp;Evaluation&nbsp;aborted.<br&nbsp;/><br&nbsp;/>;;&nbsp;However,&nbsp;if&nbsp;the&nbsp;common&nbsp;type&nbsp;is&nbsp;specified,&nbsp;aforementioned&nbsp;values&nbsp;can&nbsp;be&nbsp;put&nbsp;into&nbsp;an&nbsp;array<br&nbsp;/>user=>&nbsp;(into-array&nbsp;Object&nbsp;[2&nbsp;"4"&nbsp;"8"&nbsp;5])<br&nbsp;/>#<Object[]&nbsp;[Ljava.lang.Object;@3aa6d0a4><br&nbsp;/><br&nbsp;/>user=>&nbsp;(into-array&nbsp;(range&nbsp;4))<br&nbsp;/>#<Integer[]&nbsp;[Ljava.lang.Integer;@63d6dc46><br&nbsp;/><br&nbsp;/>;;&nbsp;if&nbsp;you&nbsp;assign&nbsp;a&nbsp;type,&nbsp;you&nbsp;still&nbsp;have&nbsp;to&nbsp;coerce&nbsp;values<br&nbsp;/>user=>&nbsp;(into-array&nbsp;Byte/TYPE&nbsp;(range&nbsp;4))<br&nbsp;/>;;&nbsp;Evaluation&nbsp;aborted.<br&nbsp;/><br&nbsp;/>user=>&nbsp;(into-array&nbsp;Byte/TYPE&nbsp;(map&nbsp;byte&nbsp;(range&nbsp;4)))<br&nbsp;/>#<byte[]&nbsp;[B@68ffefc9> Fri, 17 May 2013 10:14:47 GMT http://clojuredocs.org/clojure_core/clojure.core/into-array ;;&nbsp;Creating&nbsp;an&nbsp;empty&nbsp;array&nbsp;defaults&nbsp;to&nbsp;Object[]<br&nbsp;/>user=>&nbsp;(into-array&nbsp;[])<br&nbsp;/>#<Object[]&nbsp;[Ljava.lang.Object;@21f1151f><br&nbsp;/><br&nbsp;/>;;&nbsp;However,&nbsp;the&nbsp;type&nbsp;of&nbsp;an&nbsp;empty&nbsp;array&nbsp;can&nbsp;be&nbsp;coerced<br&nbsp;/>user=>&nbsp;(into-array&nbsp;String&nbsp;[])<br&nbsp;/>#<String[]&nbsp;[Ljava.lang.String;@578baf24><br&nbsp;/> Fri, 17 May 2013 10:12:30 GMT http://clojuredocs.org/clojure_contrib/clojure.contrib.generic.functor/fmap Mon, 06 May 2013 17:30:30 GMT http://clojuredocs.org/clojure_contrib/clojure.contrib.generic.functor/fmap this&nbsp;is&nbsp;so&nbsp;damn&nbsp;awesome! Mon, 06 May 2013 17:30:07 GMT http://clojuredocs.org/clojure_core/clojure.core/dissoc Fri, 03 May 2013 17:04:33 GMT http://clojuredocs.org/clojure_core/clojure.core/xml-seq (use&nbsp;'[clojure.xml&nbsp;:only&nbsp;[parse]])<br&nbsp;/><br&nbsp;/>;;&nbsp;clojure.xml/parse&nbsp;requires&nbsp;string&nbsp;to&nbsp;be&nbsp;ByteArrayInputStream<br&nbsp;/>user->&nbsp;(let&nbsp;[xml-text&nbsp;"<?xml&nbsp;version=\"1.0\"&nbsp;encoding=\"UTF-8\"?><br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<foo&nbsp;key=\"val\">1<bar>2</bar>3</foo>"]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(let&nbsp;[input&nbsp;(java.io.ByteArrayInputStream.&nbsp;<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(.getBytes&nbsp;xml-text))]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(let&nbsp;[root&nbsp;(parse&nbsp;input)]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(xml-seq&nbsp;root))))<br&nbsp;/><br&nbsp;/>({:tag&nbsp;:foo,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;&nbsp;:attrs&nbsp;{:key&nbsp;"val"},&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;&nbsp;:content&nbsp;("1"&nbsp;{:tag&nbsp;:bar,&nbsp;:attrs&nbsp;{},&nbsp;:content&nbsp;("2")}&nbsp;"3")}&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;"1"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;{:tag&nbsp;:bar,&nbsp;:attrs&nbsp;{},&nbsp;:content&nbsp;("2")}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;"2"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;"3") Thu, 02 May 2013 04:25:04 GMT http://clojuredocs.org/clojure_contrib/clojure.contrib.generic.functor/fmap The&nbsp;namespace&nbsp;for&nbsp;this&nbsp;is&nbsp;now&nbsp;clojure.algo.generic.functor&nbsp;(in&nbsp;org.clojure:algo.generic:0.1.1). Wed, 01 May 2013 23:43:49 GMT http://clojuredocs.org/clojure_core/clojure.core/xml-seq ;;&nbsp;data.xml&nbsp;from&nbsp;https://github.com/clojure/data.xml/<br&nbsp;/>(use&nbsp;'[clojure.data.xml&nbsp;:only&nbsp;[parse-str]])<br&nbsp;/><br&nbsp;/>user=>&nbsp;(let&nbsp;[xml-text&nbsp;"<?xml&nbsp;version=\"1.0\"&nbsp;encoding=\"UTF-8\"?><br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<foo&nbsp;key=\"val\">1<bar>2</bar>3</foo>"]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(let&nbsp;[root&nbsp;(parse-str&nbsp;xml-text)]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(xml-seq&nbsp;root)))<br&nbsp;/><br&nbsp;/>({:tag&nbsp;:foo,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;&nbsp;:attrs&nbsp;{:key&nbsp;"val"},&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;&nbsp;:content&nbsp;("1"&nbsp;{:tag&nbsp;:bar,&nbsp;:attrs&nbsp;{},&nbsp;:content&nbsp;("2")}&nbsp;"3")}&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;"1"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;{:tag&nbsp;:bar,&nbsp;:attrs&nbsp;{},&nbsp;:content&nbsp;("2")}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;"2"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;"3")&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/> Wed, 01 May 2013 19:08:45 GMT http://clojuredocs.org/clojure_core/clojure.core/condp ;;this&nbsp;is&nbsp;with&nbsp;liberator<br&nbsp;/>;;branching&nbsp;on&nbsp;request&nbsp;method<br&nbsp;/>(defresource&nbsp;my-resource<br&nbsp;/>&nbsp;&nbsp;:exists?&nbsp;(fn&nbsp;[{:keys&nbsp;[db]&nbsp;{query-params&nbsp;:query-params&nbsp;<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;body&nbsp;:body&nbsp;<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;method&nbsp;:request-method}&nbsp;<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:request}]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(condp&nbsp;=&nbsp;method<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:get&nbsp;(my-get-exists-fn)<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:post&nbsp;(my-post-exists-fn)))) Tue, 30 Apr 2013 17:00:04 GMT http://clojuredocs.org/clojure_core/clojure.core/max ;;&nbsp;If&nbsp;elements&nbsp;are&nbsp;already&nbsp;in&nbsp;a&nbsp;sequence,&nbsp;use&nbsp;apply<br&nbsp;/>user=>&nbsp;(apply&nbsp;max&nbsp;[1&nbsp;2&nbsp;3&nbsp;4&nbsp;3])<br&nbsp;/>4<br&nbsp;/>user=>&nbsp;(apply&nbsp;max&nbsp;'(4&nbsp;3&nbsp;5&nbsp;6&nbsp;2))<br&nbsp;/>6 Mon, 29 Apr 2013 05:12:03 GMT http://clojuredocs.org/clojure_core/clojure.core/ns Wed, 24 Apr 2013 15:55:50 GMT http://clojuredocs.org/clojure_core/clojure.core/namespace Wed, 24 Apr 2013 15:55:36 GMT http://clojuredocs.org/clojure_core/clojure.core/assoc (def&nbsp;test-map&nbsp;{:account-no&nbsp;12345678&nbsp;:lname&nbsp;"Jones"&nbsp;:fnam&nbsp;"Fred"})<br&nbsp;/>(assoc&nbsp;test-map&nbsp;:fnam&nbsp;"Sue")<br&nbsp;/>{:account-no&nbsp;12345678,&nbsp;:lname&nbsp;"Jones",&nbsp;:fnam&nbsp;"Sue"} Tue, 23 Apr 2013 19:55:36 GMT http://clojuredocs.org/clojure_core/clojure.core/pop Mon, 22 Apr 2013 17:11:25 GMT http://clojuredocs.org/clojure_core/clojure.set/project it&nbsp;strikes&nbsp;me&nbsp;as&nbsp;being&nbsp;very&nbsp;odd&nbsp;that&nbsp;the&nbsp;key&nbsp;set&nbsp;is&nbsp;a&nbsp;vector&nbsp;as&nbsp;opposed&nbsp;to&nbsp;vargs <br&nbsp;/> Mon, 22 Apr 2013 16:15:05 GMT http://clojuredocs.org/clojure_core/clojure.core/with-redefs (ns&nbsp;http)<br&nbsp;/><br&nbsp;/>(defn&nbsp;post&nbsp;[url]<br&nbsp;/>&nbsp;&nbsp;{:body&nbsp;"Hello&nbsp;world"})<br&nbsp;/><br&nbsp;/>(ns&nbsp;app<br&nbsp;/>&nbsp;&nbsp;(:require&nbsp;[clojure.test&nbsp;:refer&nbsp;[deftest&nbsp;is&nbsp;run-tests]]))<br&nbsp;/><br&nbsp;/>(deftest&nbsp;is-a-macro<br&nbsp;/>&nbsp;&nbsp;(with-redefs&nbsp;[http/post&nbsp;(fn&nbsp;[url]&nbsp;{:body&nbsp;"Goodbye&nbsp;world"})]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;(is&nbsp;(=&nbsp;{:body&nbsp;"Goodbye&nbsp;world"}&nbsp;(http/post&nbsp;"http://service.com/greet")))))<br&nbsp;/><br&nbsp;/>(run-tests)&nbsp;;;&nbsp;test&nbsp;is&nbsp;passing Sun, 21 Apr 2013 15:21:32 GMT http://clojuredocs.org/clojure_core/clojure.set/intersection Fri, 19 Apr 2013 20:41:08 GMT http://clojuredocs.org/clojure_core/clojure.set/difference Fri, 19 Apr 2013 20:40:47 GMT http://clojuredocs.org/clojure_core/clojure.core/spit user=>&nbsp;(spit&nbsp;"flubber.txt"&nbsp;"test")<br&nbsp;/>nil<br&nbsp;/>user=>&nbsp;(slurp&nbsp;"flubber.txt")<br&nbsp;/>"test" Thu, 18 Apr 2013 15:59:43 GMT http://clojuredocs.org/clojure_core/clojure.test/deftest Tue, 16 Apr 2013 15:45:24 GMT http://clojuredocs.org/clojure_core/clojure.repl/pst user=>&nbsp;(pst)<br&nbsp;/>nil<br&nbsp;/><br&nbsp;/>user=>&nbsp;(/&nbsp;1&nbsp;0)<br&nbsp;/>ArithmeticException&nbsp;Divide&nbsp;by&nbsp;zero&nbsp;&nbsp;clojure.lang.Numbers.divide&nbsp;(Numbers.java:156)<br&nbsp;/><br&nbsp;/>user=>&nbsp;(pst)<br&nbsp;/>ArithmeticException&nbsp;Divide&nbsp;by&nbsp;zero<br&nbsp;/> clojure.lang.Numbers.divide&nbsp;(Numbers.java:156)<br&nbsp;/> clojure.lang.Numbers.divide&nbsp;(Numbers.java:3691)<br&nbsp;/> user/eval13&nbsp;(NO_SOURCE_FILE:7)<br&nbsp;/> clojure.lang.Compiler.eval&nbsp;(Compiler.java:6619)<br&nbsp;/> clojure.lang.Compiler.eval&nbsp;(Compiler.java:6582)<br&nbsp;/> clojure.core/eval&nbsp;(core.clj:2852)<br&nbsp;/> clojure.main/repl/read-eval-print--6588/fn--6591&nbsp;(main.clj:259)<br&nbsp;/> clojure.main/repl/read-eval-print--6588&nbsp;(main.clj:259)<br&nbsp;/> clojure.main/repl/fn--6597&nbsp;(main.clj:277)<br&nbsp;/> clojure.main/repl&nbsp;(main.clj:277)<br&nbsp;/> clojure.main/repl-opt&nbsp;(main.clj:343)<br&nbsp;/> clojure.main/main&nbsp;(main.clj:441)<br&nbsp;/>nil<br&nbsp;/> Sun, 14 Apr 2013 12:44:32 GMT http://clojuredocs.org/clojure_core/clojure.repl/find-doc user=>&nbsp;(find-doc&nbsp;"data&nbsp;structure")<br&nbsp;/><br&nbsp;/>-------------------------<br&nbsp;/>clojure.core/eval<br&nbsp;/>([form])<br&nbsp;/>&nbsp;&nbsp;Evaluates&nbsp;the&nbsp;form&nbsp;data&nbsp;structure&nbsp;(not&nbsp;text!)&nbsp;and&nbsp;returns&nbsp;the&nbsp;result.<br&nbsp;/>-------------------------<br&nbsp;/>clojure.core/ifn?<br&nbsp;/>([x])<br&nbsp;/>&nbsp;&nbsp;Returns&nbsp;true&nbsp;if&nbsp;x&nbsp;implements&nbsp;IFn.&nbsp;Note&nbsp;that&nbsp;many&nbsp;data&nbsp;structures<br&nbsp;/>&nbsp;&nbsp;(e.g.&nbsp;sets&nbsp;and&nbsp;maps)&nbsp;implement&nbsp;IFn<br&nbsp;/> Sun, 14 Apr 2013 12:32:13 GMT http://clojuredocs.org/clojure_core/clojure.core/identity Wed, 10 Apr 2013 16:54:45 GMT http://clojuredocs.org/clojure_core/clojure.core/nil_q Wed, 10 Apr 2013 16:54:29 GMT http://clojuredocs.org/clojure_core/clojure.core/with-bindings Wed, 10 Apr 2013 16:47:45 GMT http://clojuredocs.org/clojure_core/clojure.core/with-redefs Wed, 10 Apr 2013 16:47:25 GMT http://clojuredocs.org/clojure_core/clojure.core/cond user=>&nbsp;(let&nbsp;[grade&nbsp;85]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(cond<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(>=&nbsp;grade&nbsp;90)&nbsp;"A"<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(>=&nbsp;grade&nbsp;80)&nbsp;"B"<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(>=&nbsp;grade&nbsp;70)&nbsp;"C"<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(>=&nbsp;grade&nbsp;60)&nbsp;"D"<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:else&nbsp;"F"))<br&nbsp;/>"B" Tue, 09 Apr 2013 09:38:34 GMT http://clojuredocs.org/clojure_core/clojure.string/split Thanks&nbsp;for&nbsp;the&nbsp;help&nbsp;Domon&nbsp;and&nbsp;Iceland_jack,&nbsp;one&nbsp;more&nbsp;question: <br&nbsp;/> <br&nbsp;/>Say&nbsp;I&nbsp;have&nbsp;used&nbsp;sequence&nbsp;in&nbsp;the&nbsp;way: <br&nbsp;/> <br&nbsp;/>user=&gt;&nbsp;(seq&nbsp;"2938434") <br&nbsp;/>(\2&nbsp;\9&nbsp;\3&nbsp;\8&nbsp;\4&nbsp;\3&nbsp;\4) <br&nbsp;/> <br&nbsp;/>If&nbsp;I&nbsp;only&nbsp;wanted&nbsp;to&nbsp;access&nbsp;the&nbsp;4th&nbsp;item&nbsp;in&nbsp;the&nbsp;sequence&nbsp;(which&nbsp;is&nbsp;8),&nbsp;how&nbsp;would&nbsp;I&nbsp;do&nbsp;so?&nbsp;Aside&nbsp;from&nbsp;using&nbsp;(next&nbsp;(next&nbsp;(next&nbsp;...)))&nbsp;?&nbsp;Just&nbsp;trying&nbsp;to&nbsp;index&nbsp;it&nbsp;giving&nbsp;that&nbsp;I&nbsp;want&nbsp;position&nbsp;4 Tue, 09 Apr 2013 02:45:09 GMT http://clojuredocs.org/clojure_core/clojure.core/conj user=>&nbsp;(conj&nbsp;[1&nbsp;2&nbsp;3]&nbsp;4)<br&nbsp;/>[1&nbsp;2&nbsp;3&nbsp;4]<br&nbsp;/><br&nbsp;/>user=>&nbsp;(conj&nbsp;'(1&nbsp;2&nbsp;3)&nbsp;4)<br&nbsp;/>(4&nbsp;1&nbsp;2&nbsp;3)<br&nbsp;/><br&nbsp;/>user=>&nbsp;(conj&nbsp;["a"&nbsp;"b"&nbsp;"c"]&nbsp;"d")<br&nbsp;/>["a"&nbsp;"b"&nbsp;"c"&nbsp;"d"]<br&nbsp;/><br&nbsp;/>user=>&nbsp;(conj&nbsp;[1&nbsp;2]&nbsp;3&nbsp;4)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>[1&nbsp;2&nbsp;3&nbsp;4]<br&nbsp;/><br&nbsp;/>user=>&nbsp;(conj&nbsp;[[1&nbsp;2]&nbsp;[3&nbsp;4]]&nbsp;[5&nbsp;6])&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br&nbsp;/>[[1&nbsp;2]&nbsp;[3&nbsp;4]&nbsp;[5&nbsp;6]]<br&nbsp;/><br&nbsp;/>;;&nbsp;Maps&nbsp;only&nbsp;take&nbsp;vectors&nbsp;of&nbsp;length&nbsp;exactly&nbsp;2<br&nbsp;/>user=>&nbsp;(conj&nbsp;{1&nbsp;2,&nbsp;3&nbsp;4}&nbsp;[5&nbsp;6])<br&nbsp;/>{5&nbsp;6,&nbsp;1&nbsp;2,&nbsp;3&nbsp;4}<br&nbsp;/><br&nbsp;/>user=>&nbsp;(conj&nbsp;{:firstname&nbsp;"John"&nbsp;:lastname&nbsp;"Doe"}&nbsp;{:age&nbsp;25&nbsp;:nationality&nbsp;"Chinese"})<br&nbsp;/>{:nationality&nbsp;"Chinese",&nbsp;:age&nbsp;25,&nbsp;:firstname&nbsp;"John",&nbsp;:lastname&nbsp;"Doe"}<br&nbsp;/><br&nbsp;/>;;&nbsp;conj&nbsp;on&nbsp;a&nbsp;set<br&nbsp;/>user=>&nbsp;(conj&nbsp;#{1&nbsp;3&nbsp;4}&nbsp;2)<br&nbsp;/>#{1&nbsp;2&nbsp;3&nbsp;4}<br&nbsp;/><br&nbsp;/> Wed, 03 Apr 2013 22:22:48 GMT http://clojuredocs.org/clojure_core/clojure.core/re-pattern user=>&nbsp;(re-pattern&nbsp;"\\d+")<br&nbsp;/>#"\d+"<br&nbsp;/><br&nbsp;/>user=>&nbsp;(re-find&nbsp;(re-pattern&nbsp;"\\d+")&nbsp;"abc123def")&nbsp;<br&nbsp;/>"123"<br&nbsp;/><br&nbsp;/>;;&nbsp;If&nbsp;you&nbsp;want&nbsp;to&nbsp;construct&nbsp;a&nbsp;regex&nbsp;pattern&nbsp;dynamically&nbsp;at&nbsp;run&nbsp;time,<br&nbsp;/>;;&nbsp;then&nbsp;you&nbsp;need&nbsp;to&nbsp;use&nbsp;re-pattern&nbsp;to&nbsp;convert&nbsp;a&nbsp;string&nbsp;to&nbsp;a&nbsp;pattern<br&nbsp;/>;;&nbsp;that&nbsp;can&nbsp;be&nbsp;used&nbsp;for&nbsp;matching.&nbsp;&nbsp;But&nbsp;if&nbsp;your&nbsp;pattern&nbsp;is&nbsp;one&nbsp;you<br&nbsp;/>;;&nbsp;write&nbsp;into&nbsp;the&nbsp;source&nbsp;code,&nbsp;it&nbsp;is&nbsp;more&nbsp;convenient&nbsp;to&nbsp;use&nbsp;the<br&nbsp;/>;;&nbsp;#"pattern"&nbsp;syntax.&nbsp;&nbsp;The&nbsp;previous&nbsp;example&nbsp;can&nbsp;be&nbsp;written&nbsp;as&nbsp;follows.<br&nbsp;/>user=>&nbsp;(re-find&nbsp;#"\d+"&nbsp;"abc123def")&nbsp;<br&nbsp;/>"123"<br&nbsp;/><br&nbsp;/>;;&nbsp;Below&nbsp;are&nbsp;two&nbsp;examples&nbsp;that&nbsp;are&nbsp;equivalent&nbsp;in&nbsp;the&nbsp;patterns&nbsp;they<br&nbsp;/>;;&nbsp;use,&nbsp;but&nbsp;the&nbsp;#"pattern"&nbsp;syntax&nbsp;helps&nbsp;significantly,&nbsp;because&nbsp;it&nbsp;lets<br&nbsp;/>;;&nbsp;us&nbsp;avoid&nbsp;the&nbsp;requirement&nbsp;to&nbsp;escape&nbsp;every&nbsp;\&nbsp;character&nbsp;with&nbsp;another&nbsp;\<br&nbsp;/>;;&nbsp;character.&nbsp;&nbsp;See&nbsp;the&nbsp;example&nbsp;with&nbsp;embedded&nbsp;comments&nbsp;below&nbsp;for&nbsp;more<br&nbsp;/>;;&nbsp;detail&nbsp;on&nbsp;what&nbsp;the&nbsp;pattern&nbsp;matches.<br&nbsp;/>user=>&nbsp;(re-find&nbsp;#"\\\d+\s+\S+"&nbsp;"\\&nbsp;it&nbsp;sh0uld&nbsp;match&nbsp;in&nbsp;\\5&nbsp;here&nbsp;somewhere.")<br&nbsp;/>"\\5&nbsp;here"<br&nbsp;/><br&nbsp;/>user=>&nbsp;(re-find&nbsp;(re-pattern&nbsp;"\\\\\\d+\\s+\\S+")<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"\\&nbsp;it&nbsp;sh0uld&nbsp;match&nbsp;in&nbsp;\\5&nbsp;here&nbsp;somewhere.")<br&nbsp;/>"\\5&nbsp;here"<br&nbsp;/><br&nbsp;/>;;&nbsp;If&nbsp;you&nbsp;want&nbsp;to&nbsp;embed&nbsp;(ignored)&nbsp;whitespace&nbsp;and&nbsp;comments&nbsp;from&nbsp;#<br&nbsp;/>;;&nbsp;characters&nbsp;until&nbsp;end-of-line&nbsp;in&nbsp;your&nbsp;regex&nbsp;patterns,&nbsp;start&nbsp;the<br&nbsp;/>;;&nbsp;pattern&nbsp;with&nbsp;(?x)<br&nbsp;/>user=>&nbsp;(re-find&nbsp;#"(?x)&nbsp;&nbsp;#&nbsp;allow&nbsp;embedded&nbsp;whitespace&nbsp;and&nbsp;comments<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\\&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;backslash<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\d+&nbsp;&nbsp;&nbsp;#&nbsp;one&nbsp;or&nbsp;more&nbsp;digits<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\s+&nbsp;&nbsp;&nbsp;#&nbsp;whitespace<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\S+&nbsp;&nbsp;&nbsp;#&nbsp;non-whitespace"<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"\\&nbsp;it&nbsp;sh0uld&nbsp;match&nbsp;in&nbsp;\\5&nbsp;here&nbsp;somewhere.")<br&nbsp;/>"\\5&nbsp;here"<br&nbsp;/><br&nbsp;/>;;&nbsp;Other&nbsp;pattern&nbsp;flags&nbsp;like&nbsp;Java's&nbsp;DOTALL,&nbsp;MULTILINE&nbsp;and&nbsp;UNICODE_CASE<br&nbsp;/>;;&nbsp;pattern&nbsp;matching&nbsp;modes,&nbsp;can&nbsp;be&nbsp;set&nbsp;by&nbsp;combining&nbsp;these&nbsp;embedded&nbsp;flags<br&nbsp;/><br&nbsp;/>;;&nbsp;(?d)&nbsp;Unix&nbsp;lines&nbsp;(only&nbsp;match&nbsp;\newline)<br&nbsp;/>;;&nbsp;(?i)&nbsp;Case-insensitive<br&nbsp;/>;;&nbsp;(?u)&nbsp;Unicode-aware&nbsp;Case<br&nbsp;/>;;&nbsp;(?m)&nbsp;Multiline<br&nbsp;/>;;&nbsp;(?s)&nbsp;Dot&nbsp;matches&nbsp;all&nbsp;(including&nbsp;newline)<br&nbsp;/>;;&nbsp;(?x)&nbsp;Ignore&nbsp;Whitespace&nbsp;and&nbsp;comments<br&nbsp;/><br&nbsp;/>user=>&nbsp;(re-seq&nbsp;#"(?ix)&nbsp;test&nbsp;#Case&nbsp;insensitive&nbsp;and&nbsp;comments&nbsp;allowed"<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"Testing,\n&nbsp;testing,\n&nbsp;1&nbsp;2&nbsp;3")<br&nbsp;/>("Test"&nbsp;"test")<br&nbsp;/> Wed, 03 Apr 2013 09:44:18 GMT http://clojuredocs.org/clojure_core/clojure.zip/zipper Mon, 01 Apr 2013 22:41:43 GMT http://clojuredocs.org/clojure_core/clojure.zip/zipper Mon, 01 Apr 2013 22:40:52 GMT http://clojuredocs.org/clojure_core/clojure.core/commute Mon, 01 Apr 2013 22:19:03 GMT http://clojuredocs.org/clojure_core/clojure.core/ensure Mon, 01 Apr 2013 22:18:54 GMT http://clojuredocs.org/clojure_core/clojure.core/set-validator! Mon, 01 Apr 2013 20:36:16 GMT http://clojuredocs.org/clojure_core/clojure.core/set-validator! Mon, 01 Apr 2013 20:36:12 GMT http://clojuredocs.org/clojure_core/clojure.core/set-validator! Mon, 01 Apr 2013 20:36:05 GMT http://clojuredocs.org/clojure_core/clojure.core/agent Mon, 01 Apr 2013 20:35:55 GMT http://clojuredocs.org/clojure_core/clojure.core/atom Mon, 01 Apr 2013 20:35:35 GMT http://clojuredocs.org/clojure_core/clojure.core/ref Mon, 01 Apr 2013 20:35:16 GMT http://clojuredocs.org/clojure_core/clojure.core/read ;;&nbsp;WARNING:&nbsp;You&nbsp;SHOULD&nbsp;NOT&nbsp;use&nbsp;clojure.core/read&nbsp;or<br&nbsp;/>;;&nbsp;clojure.core/read-string&nbsp;to&nbsp;read&nbsp;data&nbsp;from&nbsp;untrusted&nbsp;sources.&nbsp;&nbsp;They<br&nbsp;/>;;&nbsp;were&nbsp;designed&nbsp;only&nbsp;for&nbsp;reading&nbsp;Clojure&nbsp;code&nbsp;and&nbsp;data&nbsp;from&nbsp;trusted<br&nbsp;/>;;&nbsp;sources&nbsp;(e.g.&nbsp;files&nbsp;that&nbsp;you&nbsp;know&nbsp;you&nbsp;wrote&nbsp;yourself,&nbsp;and&nbsp;no&nbsp;one<br&nbsp;/>;;&nbsp;else&nbsp;has&nbsp;permission&nbsp;to&nbsp;modify&nbsp;them).<br&nbsp;/><br&nbsp;/>;;&nbsp;Instead,&nbsp;either:<br&nbsp;/><br&nbsp;/>;;&nbsp;(1)&nbsp;Use&nbsp;another&nbsp;data&nbsp;serialization&nbsp;format&nbsp;such&nbsp;as&nbsp;JSON,&nbsp;XML,<br&nbsp;/>;;&nbsp;etc.&nbsp;and&nbsp;a&nbsp;library&nbsp;for&nbsp;reading&nbsp;them&nbsp;that&nbsp;you&nbsp;trust&nbsp;not&nbsp;to&nbsp;have<br&nbsp;/>;;&nbsp;vulnerabilities,&nbsp;or<br&nbsp;/><br&nbsp;/>;;&nbsp;(2)&nbsp;if&nbsp;you&nbsp;want&nbsp;a&nbsp;serialization&nbsp;format&nbsp;that&nbsp;can&nbsp;be&nbsp;read&nbsp;safely&nbsp;and<br&nbsp;/>;;&nbsp;looks&nbsp;like&nbsp;Clojure&nbsp;data&nbsp;structures,&nbsp;use&nbsp;edn<br&nbsp;/>;;&nbsp;(https://github.com/edn-format/edn).&nbsp;&nbsp;For&nbsp;Clojure&nbsp;1.3&nbsp;and&nbsp;later,<br&nbsp;/>;;&nbsp;the&nbsp;tools.reader&nbsp;contrib&nbsp;library&nbsp;provides&nbsp;an&nbsp;edn&nbsp;reader<br&nbsp;/>;;&nbsp;(http://github.com/clojure/tools.reader).&nbsp;&nbsp;There&nbsp;is&nbsp;also<br&nbsp;/>;;&nbsp;clojure.edn/read&nbsp;and&nbsp;clojure.edn/read-string&nbsp;provided&nbsp;in&nbsp;Clojure<br&nbsp;/>;;&nbsp;1.5.<br&nbsp;/><br&nbsp;/>;;&nbsp;You&nbsp;definitely&nbsp;should&nbsp;not&nbsp;use&nbsp;clojure.core/read&nbsp;or&nbsp;read-string&nbsp;if<br&nbsp;/>;;&nbsp;*read-eval*&nbsp;has&nbsp;its&nbsp;default&nbsp;value&nbsp;of&nbsp;true,&nbsp;because&nbsp;an&nbsp;attacker<br&nbsp;/>;;&nbsp;could&nbsp;cause&nbsp;your&nbsp;application&nbsp;to&nbsp;execute&nbsp;arbitrary&nbsp;code&nbsp;while&nbsp;it&nbsp;is<br&nbsp;/>;;&nbsp;reading.&nbsp;&nbsp;Example:<br&nbsp;/><br&nbsp;/>user=>&nbsp;(read-string&nbsp;"#=(clojure.java.shell/sh&nbsp;\"echo\"&nbsp;\"hi\")")<br&nbsp;/>{:exit&nbsp;0,&nbsp;:out&nbsp;"hi\n",&nbsp;:err&nbsp;""}<br&nbsp;/><br&nbsp;/>;;&nbsp;It&nbsp;is&nbsp;straightforward&nbsp;to&nbsp;modify&nbsp;the&nbsp;example&nbsp;above&nbsp;into&nbsp;more<br&nbsp;/>;;&nbsp;destructive&nbsp;ones&nbsp;that&nbsp;remove&nbsp;all&nbsp;of&nbsp;your&nbsp;files,&nbsp;copy&nbsp;them&nbsp;to<br&nbsp;/>;;&nbsp;someone&nbsp;else's&nbsp;computer&nbsp;over&nbsp;the&nbsp;Internet,&nbsp;install&nbsp;Trojans,&nbsp;etc.<br&nbsp;/><br&nbsp;/>;;&nbsp;Even&nbsp;if&nbsp;you&nbsp;do&nbsp;bind&nbsp;*read-eval*&nbsp;to&nbsp;false&nbsp;first,&nbsp;like&nbsp;so:<br&nbsp;/><br&nbsp;/>(defn&nbsp;read-string-unsafely&nbsp;[s]<br&nbsp;/>&nbsp;&nbsp;(binding&nbsp;[*read-eval*&nbsp;false]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;(read-string&nbsp;s)))<br&nbsp;/><br&nbsp;/>;;&nbsp;you&nbsp;may&nbsp;hope&nbsp;you&nbsp;are&nbsp;safe&nbsp;reading&nbsp;untrusted&nbsp;data&nbsp;that&nbsp;way,&nbsp;but&nbsp;in<br&nbsp;/>;;&nbsp;Clojure&nbsp;1.4&nbsp;and&nbsp;earlier,&nbsp;an&nbsp;attacker&nbsp;can&nbsp;send&nbsp;data&nbsp;that&nbsp;causes&nbsp;your<br&nbsp;/>;;&nbsp;system&nbsp;to&nbsp;execute&nbsp;arbitrary&nbsp;Java&nbsp;constructors.&nbsp;&nbsp;Most&nbsp;of&nbsp;these&nbsp;are<br&nbsp;/>;;&nbsp;benign,&nbsp;but&nbsp;it&nbsp;only&nbsp;takes&nbsp;one&nbsp;to&nbsp;ruin&nbsp;your&nbsp;application's&nbsp;day.<br&nbsp;/>;;&nbsp;Examples&nbsp;that&nbsp;should&nbsp;scare&nbsp;you:<br&nbsp;/><br&nbsp;/>;;&nbsp;This&nbsp;causes&nbsp;a&nbsp;socket&nbsp;to&nbsp;be&nbsp;opened,&nbsp;as&nbsp;long&nbsp;as&nbsp;the&nbsp;JVM&nbsp;sandboxing<br&nbsp;/>;;&nbsp;allows&nbsp;it.<br&nbsp;/>(read-string-unsafely&nbsp;"#java.net.Socket[\"www.google.com\"&nbsp;80]")<br&nbsp;/><br&nbsp;/>;;&nbsp;This&nbsp;causes&nbsp;precious-file.txt&nbsp;to&nbsp;be&nbsp;created&nbsp;if&nbsp;it&nbsp;doesn't&nbsp;exist,&nbsp;or<br&nbsp;/>;;&nbsp;if&nbsp;it&nbsp;does&nbsp;exist,&nbsp;its&nbsp;contents&nbsp;will&nbsp;be&nbsp;erased&nbsp;(given&nbsp;appropriate<br&nbsp;/>;;&nbsp;JVM&nbsp;sandboxing&nbsp;permissions,&nbsp;and&nbsp;underlying&nbsp;OS&nbsp;file&nbsp;permissions).<br&nbsp;/>(read-string-unsafely&nbsp;"#java.io.FileWriter[\"precious-file.txt\"]")<br&nbsp;/><br&nbsp;/>;;&nbsp;The&nbsp;particular&nbsp;issue&nbsp;of&nbsp;executing&nbsp;arbitrary&nbsp;Java&nbsp;constructors&nbsp;used<br&nbsp;/>;;&nbsp;in&nbsp;the&nbsp;examples&nbsp;above&nbsp;no&nbsp;longer&nbsp;works&nbsp;in&nbsp;Clojure&nbsp;1.5&nbsp;when<br&nbsp;/>;;&nbsp;*read-eval*&nbsp;is&nbsp;false.&nbsp;&nbsp;Even&nbsp;so,&nbsp;you&nbsp;SHOULD&nbsp;NEVER&nbsp;USE<br&nbsp;/>;;&nbsp;clojure.core/read&nbsp;or&nbsp;clojure.core/read-string&nbsp;for&nbsp;reading&nbsp;untrusted<br&nbsp;/>;;&nbsp;data.&nbsp;&nbsp;Use&nbsp;an&nbsp;edn&nbsp;reader&nbsp;or&nbsp;a&nbsp;different&nbsp;data&nbsp;serialization&nbsp;format.<br&nbsp;/><br&nbsp;/>;;&nbsp;Why&nbsp;should&nbsp;I&nbsp;do&nbsp;this,&nbsp;you&nbsp;may&nbsp;ask,&nbsp;if&nbsp;Clojure&nbsp;1.5&nbsp;closes&nbsp;the&nbsp;Java<br&nbsp;/>;;&nbsp;constructor&nbsp;hole?&nbsp;&nbsp;Because&nbsp;clojure.core/read&nbsp;and&nbsp;read-string&nbsp;are<br&nbsp;/>;;&nbsp;designed&nbsp;to&nbsp;be&nbsp;able&nbsp;to&nbsp;do&nbsp;dangerous&nbsp;things,&nbsp;and&nbsp;they&nbsp;are&nbsp;not<br&nbsp;/>;;&nbsp;documented&nbsp;nor&nbsp;promised&nbsp;to&nbsp;be&nbsp;safe&nbsp;from&nbsp;unwanted&nbsp;side&nbsp;effects.&nbsp;&nbsp;If<br&nbsp;/>;;&nbsp;you&nbsp;use&nbsp;them&nbsp;for&nbsp;reading&nbsp;untrusted&nbsp;data,&nbsp;and&nbsp;a&nbsp;dangerous&nbsp;side<br&nbsp;/>;;&nbsp;effect&nbsp;is&nbsp;found&nbsp;in&nbsp;the&nbsp;future,&nbsp;you&nbsp;will&nbsp;be&nbsp;told&nbsp;that&nbsp;you&nbsp;are&nbsp;using<br&nbsp;/>;;&nbsp;the&nbsp;wrong&nbsp;tool&nbsp;for&nbsp;the&nbsp;job.&nbsp;&nbsp;clojure.edn/read&nbsp;and&nbsp;read-string,&nbsp;and<br&nbsp;/>;;&nbsp;the&nbsp;tools.reader.edn&nbsp;library,&nbsp;are&nbsp;documented&nbsp;to&nbsp;be&nbsp;safe&nbsp;from<br&nbsp;/>;;&nbsp;unwanted&nbsp;side&nbsp;effects,&nbsp;and&nbsp;if&nbsp;any&nbsp;bug&nbsp;is&nbsp;found&nbsp;in&nbsp;this&nbsp;area&nbsp;it<br&nbsp;/>;;&nbsp;should&nbsp;get&nbsp;quick&nbsp;attention&nbsp;and&nbsp;corrected.<br&nbsp;/><br&nbsp;/>;;&nbsp;If&nbsp;you&nbsp;understand&nbsp;all&nbsp;of&nbsp;the&nbsp;above,&nbsp;and&nbsp;want&nbsp;to&nbsp;use&nbsp;read&nbsp;or<br&nbsp;/>;;&nbsp;read-string&nbsp;to&nbsp;read&nbsp;data&nbsp;from&nbsp;a&nbsp;_trusted_&nbsp;source,&nbsp;continue&nbsp;on<br&nbsp;/>;;&nbsp;below.<br&nbsp;/><br&nbsp;/>;;&nbsp;read&nbsp;wants&nbsp;its&nbsp;reader&nbsp;arg&nbsp;(or&nbsp;*in*)&nbsp;to&nbsp;be&nbsp;a&nbsp;java.io.PushbackReader.<br&nbsp;/>;;&nbsp;with-open&nbsp;closes&nbsp;r&nbsp;after&nbsp;the&nbsp;with-open&nbsp;body&nbsp;is&nbsp;done.&nbsp;&nbsp;*read-eval*<br&nbsp;/>;;&nbsp;specifies&nbsp;whether&nbsp;to&nbsp;allow&nbsp;#=()&nbsp;forms&nbsp;when&nbsp;reading,&nbsp;and&nbsp;evaluate<br&nbsp;/>;;&nbsp;them&nbsp;as&nbsp;a&nbsp;side&nbsp;effect&nbsp;while&nbsp;reading.<br&nbsp;/><br&nbsp;/>(defn&nbsp;read-from-file-with-trusted-contents&nbsp;[filename]<br&nbsp;/>&nbsp;&nbsp;(with-open&nbsp;[r&nbsp;(java.io.PushbackReader.<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(clojure.java.io/reader&nbsp;filename))]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;(binding&nbsp;[*read-eval*&nbsp;false]<br&nbsp;/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(read&nbsp;r))))<br&nbsp;/><br&nbsp;/>user=>&nbsp;(spit&nbsp;"testfile.txt"&nbsp;"{:a&nbsp;1&nbsp;:b&nbsp;2&nbsp;:c&nbsp;3}")<br&nbsp;/>nil<br&nbsp;/>user=>&nbsp;(read-from-file-with-trusted-contents&nbsp;"testfile.txt")<br&nbsp;/>{:a&nbsp;1,&nbsp;:b&nbsp;2,&nbsp;:c&nbsp;3}<br&nbsp;/> Sun, 31 Mar 2013 19:35:39 GMT http://clojuredocs.org/clojure_core/clojure.core/ref-max-history Sun, 31 Mar 2013 15:51:59 GMT http://clojuredocs.org/clojure_core/clojure.core/ref-max-history Sun, 31 Mar 2013 15:51:54 GMT http://clojuredocs.org/clojure_core/clojure.core/ref-min-history Sun, 31 Mar 2013 15:51:34 GMT http://clojuredocs.org/clojure_core/clojure.core/ref-min-history Sun, 31 Mar 2013 15:51:28 GMT http://clojuredocs.org/clojure_core/clojure.core/ref-min-history Sun, 31 Mar 2013 15:51:23 GMT http://clojuredocs.org/clojure_core/clojure.core/ref Sun, 31 Mar 2013 15:51:00 GMT http://clojuredocs.org/clojure_core/clojure.core/ref Sun, 31 Mar 2013 15:50:53 GMT http://clojuredocs.org/clojure_core/clojure.core/ref Sun, 31 Mar 2013 15:50:37 GMT http://clojuredocs.org/clojure_core/clojure.core/ref-history-count Sun, 31 Mar 2013 15:50:23 GMT