override def toString = "something" } implicit def myTraitToString(input: myTrait): String = input.toString object myObject extends myTrait val s: String = myObject 但是,如果我尝试使用它编译文件,我会收到以下错误: [error] myTrait.scala:37: expected start of definition [error] implicit def ...
<console>:4: error: ';' expected but 'match' found. } match { ^ scala> case Success(_) => <console>:1: error: illegal start of definition case Success(_) => ^ scala> println("Data Wtriting Process has been Completed") Data Wtriting Process has been Completed scala> case Failure(...
expected start of definition I am trying to silence deprecation warning on package object inheritance while we migrate to Scala 3. The annotation location parses fine if thepackagekeyword is removed. Perhaps I'm supposed to put the annotation somewhere else, but I couldn't figure out where. ...
In this version, the function mkRx was added, but otherwise the computed value of c remains unchanged. And modfying a appears to behave as expected:a() = 4 println(c.now, count) //(6,2)But if we modify b we might start to notice something not quite right:b() = 3 println(c....
Let’s start from a definition. Acurrying functionis a function which could accept less number of parameters which are declared, then it returns a function with not used parameters. This definition is totally weird. In order to understand it we need to go through several examples. And be sur...
scala> def hi: String = "hi" hi: String Now we’re ready to look at a full function definition. Syntax: Defining a Function def <identifier>(<identifier>: <type>[, ... ]): <type> = <expression> Let’s try creating a function that performs an essential mathematical operation: ...
> console # Start the Scala REPL. > run # Run one of the "main" routines in the project. > show x # Show the definition of variable "x". > eclipse # Generate Eclipse project files. > exit # Quit the REPL (also control-d works). I run ~test all the time to keep compiling ch...
TheSmart Completionfeature is aware of the expected type and data flow, and offers the options relevant to the context. To callSmart Completion, pressCtrlShiftSpace. When you callSmart Completiontwice, it shows you more results, including chains. ...
{ val expected = jsonContentOf("/events/events.json").asArray.value status shouldEqual StatusCodes.OK responseAs[String] shouldEqual eventStreamFor(expected) } } "return all events for an organization from the last seen" in { Get("/").addHeader(`Last-Event-ID`(0.toString)) ~> event...
We can then use the Scala collection API, to transform it to the expected result:case class SpokenLanguages(country:String, languages:Seq[String]) languages.headOption.map { f => SpokenLanguages(f._1, languages.map(_._2)) }Finally, we get this convenient function:...