现在我有很多可以没有的参数,我想将整个表达式赋值为默认值.
现在我正在做的事情
var name: Option[String] = None var surname: Option[String] = Some("Smith") val fullName:String = { name.map { name => surname.map { surname => surname + "," + name }.getorElse("unkNown") }.getorElse("unkNown") }
但它有点太冗长了.我想知道什么是更惯用和更优雅的方式来处理它,理想情况下它会像(它的伪代码,当然!):
val fullName = (name + "," + surname).getorElse("unkNown")
或类似的东西……
(只是避免双重.getorElse会很棒……)