cykic的专栏

隐式转换：implicit def intToString(i:Int) = i.toString  implicit def可以对一种类型的参数自动做转换，在上面的隐式转换作用域中，所有Int 如果不符合编译要求，会先被转换为String不可有多个隐式转换，如再加一个implicit def intToString2(i:Int) = i.toString + “2” 则编译报错

trait:  Serve as interfaces in Scala, can only have def inside, notval  trait implements:  class A extends B with C1 with C2...      Functions can also be defined as trait or object like

pattern matching 生成list 或是vector等的技巧：case class: a class that can use cases patterne match {  case p1 => exp1  case p2 => exp2...}a match exception will be thrown if no match w

上图：in ScalaNothing will be used for all null like use casesOption: either Some or None典型应用： Map中get方法返回Option：scores.get(“Alice”) match {     case Some(score) => println(“sco

看了下scala future的官方文档，融合了自己的理解整理在这里，例子全部来自官方文档：http://docs.scala-lang.org/overviews/core/futures.htmlfuture represents a result of an async method, would could due to long time-consuming operat