Scala基本数据类型

scala> val a :Int = 1
a: Int = 1
scala> val b :Boolean = true
b: Boolean = true

scala> val c :Float = 1.234f
c: Float = 1.234

scala> val d = 1.asInstanceOf[Double]
d: Double = 1.0

scala> val f = 2.isInstanceOf[Int]
f: Boolean = true
scala> val g = 2.1234.isInstanceOf[Double]
g: Boolean = true
scala> val e = 2.1234f.isInstanceOf[Float]
e: Boolean = true

scala> lazy val h = 1
h: Int = <lazy>

scala> h
res0: Int = 1