Clojure入門

(defun hello (name) (print (concatenate 'string "Hello, " name "!"))) (hello "Common Lisp") (define (hello name) (print "Hello, " name "!")) (hello "Scheme") (defn hello [name] (print (str "Hello, " name "!"))) (hello "Clojure")

def hello(name) puts "Hello, " + name + "!" end hello "Ruby" (defn hello [name] (print (str "Hello, " name "!"))) (hello "Clojure")

(1 2 3) ["apple" "google" "microsoft"] {:artist "Michael Jackson" :song "Thriller"}

person.getAddress().getZipCode() (.getZipCode (.getAddress person))

person.getAddress().getZipCode() (.. person getAddress getZipCode)

(car (list 1 3 5 7 9)) ; -> 1 (cdr (list 1 3 5 7 9)) ; -> (3 5 7 9)

(first (list 1 3 5 7 9)) ; -> 1 (second (list 1 3 5 7 9)) ; -> 3 (rest (list 1 3 5 7 9)) ; -> (3 5 7 9)

#!/bin/sh java -cp /path/to/clojure.jar clojure.main $* $ clj Clojure 1.2.0-master-SNAPSHOT user=> $ clj hello.clj Hello, Clojure!

$ curl -O http://github.com/technomancy/leiningen/raw/stable/bin/lein $ mv lein ~/bin/ $ chmod +x ~/bin/lein $ lein self-install $ lein repl Clojure 1.1.0-master-SNAPSHOT user=>

user=> (doc first) (doc first) ------------------------- clojure.core/first ([coll]) Returns the first item in the collection. Calls seq on its argument. If coll is nil, returns nil.

user=> (use 'clojure.contrib.repl-utils) (use 'clojure.contrib.repl-utils) nil user=> (source +) (source +) (defn + "Returns the sum of nums. (+) returns 0." {:inline (fn [x y] `(. clojure.lang.Numbers (add ~x ~y))) :inline-arities #{2}} ...

user=> (use 'clojure.contrib.repl-utils) (use 'clojure.contrib.repl-utils) nil user=> (show java.net.InetAddress) (show java.net.InetAddress) === public java.net.InetAddress === [ 0] static getAllByName : InetAddress[] (String) [ 1] static getByAddress : InetAddress (String,byte[]) [ 2] static getByAddress : InetAddress (byte[]) ...

$ cat abc.txt abc defg Clojure

user=> (slurp "abc.txt") "abcndefgnnClojure n" user=> (print (slurp "abc.txt")) abc defg Clojure nil user=>

user=> (use '[clojure.contrib.duck-streams :only (read-lines)]) nil user=> (doseq [line (read-lines "abc.txt")] (println line)) abc defg Clojure nil

for (String line : lines) { System.out.println(line); } (doseq [line lines] (println line))

user=> (use '[clojure.contrib.duck-streams :only (reader)]) nil user=> (doseq [line (line-seq (reader (java.io.File. "abc.txt")))] (println line)) abc defg Clojure nil

user=> (with-open [rdr (java.io.BufferedReader. (java.io.FileReader. "abc.txt"))] (doseq [line (line-seq rdr)] (println line))) abc defg Clojure nil

http://www.slideshare.net	84
http://paper.li	8
http://a0.twimg.com	4
https://si0.twimg.com	2
http://webcache.googleusercontent.com	1
http://www.linkedin.com	1

Clojure入門

by Naoyuki Kakuda

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