First MD

Author: Cheng Hao

scala_training/Introduction.md

@@ -0,0 +1,59 @@
+- # A Scalable language
+- # Object-Oriented
+- # Functional
+- # Seamless Java Interop
+- # Functions are Objects
+- # Future-Proof
+- # Fun
+ <h3>--Martin Odersky</h3>
+
+# First Example
+- Compile & Run
+
+```scala
+1.scala:
+
+object HelloWorld {
+  def main(args: Array[String]) {
+    println("Hello, world!")
+  }
+}
+
+scalac 1.scala
+scala HelloWorld
+```
+
+- Execute the code in Scala Shell
+
+```scala
+bin/scala
+scala>println("Hello, world!")
+Hello, world！
+```
+
+- Run the code as Script
+
+```scala
+file: 2.scala
+
+println("Hello, world!")
+    
+$/tmp>scala 2.scala
+Hello, world！
+
+```
+
+- Run Scala in Shell Scripts
+
+```scala
+file: script.sh
+#!/bin/sh
+exec scala "$0" "$@"
+!#
+object HelloWorld {
+  def main(args: Array[String]) {
+    println("Hello, world! " + args.toList)
+  }
+}
+HelloWorld.main(args)
+```