\nscala> Garys-MBP:search gary$ scala\nWelcome to Scala version 2.11.2 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_25).\nType in expressions to have them evaluated.\nType :help for more information.\n<\/pre>\nThis is an excellent place to explore the language. For example, you can print to the screen:<\/p>\n
\nscala> println(\"Hello World!\")\nHello World!\n<\/pre>\nTo exit, press ctrl-C.<\/p>\n
Now, let’s put some code in a file named hello.scala (you can also run this in the scala command line interpreter):<\/p>\n
\nobject HelloWorld { \n def main(args: Array[String]) { \n println(\"Hello, world!\")\n } \n} \n<\/pre>\nOn the command line, you can run this with the scala interpreter:<\/p>\n
\nscala hello.scala \nHello, world!\n<\/pre>\nOne of the benefits of using scala is the libraries that ship with the language.<\/p>\n
For instance, let’s go back into the scala interpreter and make a list:<\/p>\n
\nscala> val x = List(1, 2, 3)\nx: List[Int] = List(1, 2, 3)\n<\/pre>\nNow, type “x.” at the command line, and press tab twice: this will show you functions you can call on the list.<\/p>\n
\nscala> x.\n++ canEqual drop foreach isDefinedAt mapConserve product reverseMap sorted toIndexedSeq unzip3 \n++: collect dropRight genericBuilder isEmpty max productArity reverse_::: span toIterable updated \n+: collectFirst dropWhile groupBy isInstanceOf maxBy productElement runWith splitAt toIterator view \n\/: combinations endsWith grouped isTraversableAgain min productIterator sameElements startsWith toList withFilter \n:+ companion exists hasDefiniteSize iterator minBy productPrefix scan stringPrefix toMap zip \n:: compose filter head last mkString reduce scanLeft sum toSeq zipAll \n::: contains filterNot headOption lastIndexOf nonEmpty reduceLeft scanRight tail toSet zipWithIndex \n:\\ containsSlice find indexOf lastIndexOfSlice orElse reduceLeftOption segmentLength tails toStream \naddString copyToArray flatMap indexOfSlice lastIndexWhere padTo reduceOption seq take toString \naggregate copyToBuffer flatten indexWhere lastOption par reduceRight size takeRight toTraversable \nandThen corresponds fold indices length partition reduceRightOption slice takeWhile toVector \napply count foldLeft init lengthCompare patch repr sliding to transpose \napplyOrElse diff foldRight inits lift permutations reverse sortBy toArray union \nasInstanceOf distinct forall intersect map prefixLength reverseIterator sortWith toBuffer unzip \n<\/pre>\nUsing these techniques you can start exploring the available APIs.<\/p>\n","protected":false},"excerpt":{"rendered":"
The scala programming language has become a popular replacement for Java. Once you download scala, you can access it from the command line: scala> Garys-MBP:search gary$ scala Welcome to Scala version 2.11.2 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_25). Type in expressions to have them evaluated. Type :help for more information. This is an excellent … <\/p>\n
Continue reading “Scala example “Hello World””<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4],"tags":[480,485],"aioseo_notices":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/posts\/3123"}],"collection":[{"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/comments?post=3123"}],"version-history":[{"count":0,"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/posts\/3123\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/media?parent=3123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/categories?post=3123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.garysieling.com\/blog\/wp-json\/wp\/v2\/tags?post=3123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}