![\"scala\u306e\u672c\u8cb7\u3063\u3066\u307f\u305f](\"http:\/\/farm7.static.flickr.com\/6195\/6095750383_6fce530f81.jpg\")
<\/a> <\/p>\n\u56f31. Scala\u306e\u672c\u3082\u8cb7\u3044\u307e\u3057\u305f\u30fc<\/p>\n<\/div>\n
<\/p>\n
\u3068\u308a\u3042\u3048\u305aScala\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002Scala\u306e\u30b5\u30a4\u30c8\u304b\u3089\u3082\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u3053\u306f\u3072\u3068\u3064\u307f\u3093\u306a\u3060\u3044\u3059\u304dMacPorts\u3067\u3002\u3061\u306a\u307f\u306b\u4f5c\u696d\u6642\u306e\u79c1\u306e\u74b0\u5883\u306fMac OS X 10.7.1\u3067 MacPorts\u306f2.0.1\u3067\u3059\u3002\u6b21\u306e\u3088\u3046\u306b\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n
<\/p>\n
$ sudo port install scala29<\/pre>\n<\/p>\n
\u7c21\u5358\u3067\u3044\u3044\u3088\u306d\u30fc\u3002\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u305f\u3089\u65e9\u901f\u4f7f\u3063\u3066\u307f\u305f\u3044\u3093\u3067\u3059\u304c\u3001\u305d\u306e\u524d\u306b<\/p>\n
<\/p>\n
$ sudo scala_select scala29<\/pre>\n<\/p>\n
\u3053\u308c\u3092\u3084\u3063\u3066\u304a\u304f\u3068scala-2.9\u3058\u3083\u306a\u304f\u3066scala\u3067scala29\u304c\u4f7f\u3048\u307e\u3059\u3002scala_select\u306fscala\u3092\u5165\u308c\u308b\u3068\u4e00\u7dd2\u306b\u5165\u308b\u306f\u305a\u3002\u307e\u3042\u3001\u81ea\u5206\u3067\u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30f3\u30af\u3092\u5f35\u3063\u3066\u3082\u3044\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
<\/p>\n
\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u305f\u306e\u3067\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u78ba\u8a8d\u3002<\/p>\n
<\/p>\n
$ scala -version\nScala code runner version 2.9.0.1 -- Copyright 2002-2011, LAMP\/EPFL\n$ scalac -version\nScala compiler version 2.9.0.1 -- Copyright 2002-2011, LAMP\/EPFL\n<\/pre>\n<\/p>\n
\u3067\u306f Scala coe runner\u306e\u65b9\u3092\u8d77\u52d5\u3002\u5bfe\u8a71\u74b0\u5883\u307f\u305f\u3044\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u306a\u3093\u304b\u5165\u308c\u3066\u307f\u307e\u3059\u3002<\/p>\n
<\/p>\n
$ scala\nWelcome to Scala version 2.9.0.1 (Java HotSpot(TM) 64-Bit Server VM,\nJava 1.6.0_26).\nType in expressions to have them evaluated.\nType :help for more information.\n\nscala> 1+2*3\nres0: Int = 7\n<\/pre>\n<\/p>\n
\u304a\u30fc \ud83d\ude42 \u3061\u306a\u307f\u306b\u3053\u306e\u4f8b\u984c\u306f\u53c2\u8003\u6587\u732e[2]\u306e\u6700\u521d\u306e\u4f8b\u3067\u3059\u3002\u3082\u3046\u3072\u3068\u3064\u3001\u4eca\u5ea6\u306f\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
<\/p>\n
scala> def square(x:Int):Int ={ x*x }\nsquare: (x: Int)Int\n\nscala> square(3)\nres1: Int = 9\n<\/pre>\n<\/p>\n
\u304a\u30fc ^^; \u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u65b9\u3082\u8a66\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
<\/p>\n
$ cat Square.scala \nobject Square {\n def main(arg:Array[String]) = {\n var input = arg(0).toInt\n printf(\"%d!n\", square(input))\n }\n def square(x:Int):Int = { x*x }\n}\n$ scalac Square.scala\n$ scala Square 6\n36!\n<\/pre>\n<\/p>\n
\u304a\u304a ^^; \u3068\u3044\u3046\u3053\u3068\u3067\u3001\u3057\u3070\u3089\u304f\u904a\u3079\u305d\u3046\u3067\u3059 \ud83d\ude42 <\/p>\n
<\/p>\n
\u53c2\u8003\u6587\u732e<\/p>\n