当浏览一个piece of Scala code at aws-scala by Atlassian你可以找到以下行: type QueueURL = String @@ QueueURL.Marker
我是新来的Scala,所以我可能是错的,但@@(双at符号)似乎并不像一个标准的内置在Scala运算符中。而且,细心的读者会发现它从“scalaz”库中导入: import scalaz.{
我想要学习scalaz验证,并给予这段代码: AuthorValidator.validate(author) match {
case scalaz.Success(authorValidated) => onSuccess(authorService.addAuthor(authorValidated)) { extract: Int =>
complete(