kmizu

import java.util.*;
public class DiamondOperators {
  public static void main(String[] args) {
    Collection<? extends Number> collection = null;
    List<? super String> list = new ArrayList<>(collection);
  }
}

kmizu

val result = sqlManager.iterate(classOf[Book], Sql("SELECT BOOK_ID, BOOK_NAME, AUTHOR, PRICE FROM BOOK")){book =>
  sum = sum + book.price
  sum
}

kmizu

public class GJava {
    public static void main(String[] args) {
       GScala<String> s = new GScala<String>("FOO");
       System.out.println(s.value());
        
    }
}

kmizu

trait Association {
  type Item <: AbstractItem
  trait AbstractItem {
    def memberOf(): Group
  }
  type Group <: AbstractGroup
  trait AbstractGroup {
    def addItem(item: Item)
    def removeItem(item: Item)
    def items(): List[Item]

kmizu

object ReturnFromAnonymousFunction {
  def main(args: Array[String]) {
    (1 to 10).foreach{i =>
      println(i)
      if(i < 5) return
    }
  }
}

kmizu

object GenTypeConstraints {
   type ||[A, B] = Either[A, B]
   implicit def any2Left[A, B](l: B): Either[B, A] = Left(l)
   implicit def any2Right[A, B](r: B): Either[A, B] = Right(r)
   def main(args: Array[String]) {
     println(f(1))
     println(f("FOO"))
     // compilation error println(f(1.0D))
   }
   def f[T](v: T)(implicit ev: T => (String || Int)): String = {

kmizu

--- SqlManager.scala.orig	2011-08-16 01:40:50.603000000 +0900
+++ SqlManager.scala	2011-08-16 02:04:16.069118600 +0900
@@ -8,10 +8,7 @@
 /**
  * SqlManager wrapper for Scala.
  */
-class SqlManager(sqlManager: jp.sf.amateras.mirage.SqlManagerImpl) {
-
-  // TODO もう少しいい初期化の方法はないかなぁ
-  BeanDescFactoryInitializer.initialize()

kmizu

//Link testa and testz.
//To compile this file, testz.scala, testa.scala, and test.scala must be compiled.
//In this approach, we can select different implementation of test.A
object link extends test with testa with testz {
  class A extends super[testa].A with super[testz].A
  def main(args: Array[String]) {
    val a = new A
    println(a.aaa())
    println(a.aaa2())
    println(a.zzz())

kmizu

Welcome to Scala version 2.9.0.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_26).
Type in expressions to have them evaluated.
Type :help for more information.

scala> trait scope {
     |   class A extends AnyRef with Z {
     |     def aaa() = zzz2()
     |     def aaa2() = 100
     |   }

kmizu

trait VisitorsBase {self =>
  trait Node {
    def accept(v: V)
  }
  case class Add(l: Node, r: Node) extends Node {
    def accept(v: V) {
      v.visit(this)
    }
  }
  case class Sub(l: Node, r: Node) extends Node {