1.val a:Float = 1.1 无法识别数据类型
error: type mismatch;
found : Double(1.1)
required: Float
val a:Float = 1.1
^
正确写法val a:Float = 1.1f 或val a = 1.1f
2.scala数据类型转换
val a:Int = 10
将a转换成float类型
val b = a.asInstanceOf[Float] 或 val b = a.toFloat
3.scala数据类型判断
val a:Int = 10
val c = a.isInstanceOf[Int] 返回值Boolean=false
