如果我用一个带有默认值的参数定义一个方法,我可以在不传递任何参数的情况下调用它吗?
scala> def printArgs(str:String = "default"){println(str)}
printArgs: (str: String)Unit
scala> printArgs
<console>:11: error: missing arguments for method printArgs in object $iw;
follow this method with '_' if you want to treat it as a partially applied function
printArgs
^