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Why scala?

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Ikhoon Eom
Ikhoon Eom

This document discusses Scala programming language trends. It provides examples of popular Scala features like pattern matching, futures/asynchronous programming, and the Try monad. It also briefly mentions that Scala is open source and lists some of the highest paying tech jobs in the US.

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1. . . Top paying tech in US
2.Java .
3. . We want to be geek.
4. - remote .
Scala Job Trends
5. . // - . val a : String = "world" val b = "hello" // val str = "hello world" val WithHello = "hello (.*)".r str match { case WithHello(next) => println(next) } .
6. ¡¤ . ¡¤ scala open source contribute . ¡¤
7.threadpoolhell Scala async . // Asynchronous computations that yield futures are created with the Future call val s = "Hello" val f: Future[String] = Future { s + " future!" } f onSuccess { case msg => println(msg) }
8. . .
9.Richcollectionapi
10. - Try[T] import scala.util.{Failure, Success, Try} val success1: Try[String] = Success("success-1") val success2: Try[String] = Success("success-2") val fail: Try[String] = Failure(new IllegalStateException("Error")) val result1 = for { a <- success1 b <- fail c <- success2 } yield c // result1: scala.util.Try[String] = Failure(java.lang.IllegalStateException: Some Error) val result2 = for { a <- fail b <- success1 c <- success2 } yield c // result2: scala.util.Try[String] = Failure(java.lang.IllegalStateException: Some Error)

More Related Content

Why scala?

  • 1. ? ?
  • 2. 1. . . Top paying tech in US
  • 4. 3. . We want to be geek.
  • 7. 5. . // - . val a : String = "world" val b = "hello" // val str = "hello world" val WithHello = "hello (.*)".r str match { case WithHello(next) => println(next) } .
  • 8. 6. ¡¤ . ¡¤ scala open source contribute . ¡¤
  • 9. 7.threadpoolhell Scala async . // Asynchronous computations that yield futures are created with the Future call val s = "Hello" val f: Future[String] = Future { s + " future!" } f onSuccess { case msg => println(msg) }
  • 12. 10. - Try[T] import scala.util.{Failure, Success, Try} val success1: Try[String] = Success("success-1") val success2: Try[String] = Success("success-2") val fail: Try[String] = Failure(new IllegalStateException("Error")) val result1 = for { a <- success1 b <- fail c <- success2 } yield c // result1: scala.util.Try[String] = Failure(java.lang.IllegalStateException: Some Error) val result2 = for { a <- fail b <- success1 c <- success2 } yield c // result2: scala.util.Try[String] = Failure(java.lang.IllegalStateException: Some Error)