scalac 学习

val logEnable = false
def log(msg: => String) =
if (logEnable) println(msg)
val MSG = "programing is running"
log(MSG + 1 / 0)

class Stu(private val name:String,private var age:Int)
{
def Name = name;
def Age = age;
def Age_=(age: Int) = this.age = age;
}
val s = new Stu("wengmj",36);
s.Age=37
println(s.Age);

import scala.language.reflectiveCalls

def withClose[A <: { def close(): Unit }, B](closeAble: A)
(f: A => B): B =
try {
f(closeAble)
} finally {
closeAble.close()
}
class Connection {
def close() = print("close Connection")
}
val conn: Connection = new Connection()
val msg = withClose(conn) { conn =>
{
println("do something with Connection")
"123456"
}
}

import scala.language.implicitConversions
import scala.language.reflectiveCalls

object M
{
　　implicit def ask(x:Boolean)=new{def ?(a:Any,b:Any):Any=if(x) a else b}
　　def main(args:Array[String])
　　{
　　　　print((3>2) ? ("hello","world"));
　　}
}