WebThese examples show how it works when you give it the Boolean values true and false: scala> val answer = convertBooleanToStringMessage ( true ) answer: String = true scala> val answer = convertBooleanToStringMessage ( false ) answer: String = false Using a match expression as the body of a method Webimport scala.io.StdIn._ val in = readLine ( "Type Either a string or an Int: " ) val result: Either [ String, Int] = try Right (in.toInt) catch { case e: NumberFormatException => Left (in) } result match { case Right (x) => s "You passed me the Int: $x, which I will increment. $x + 1 = $ {x+1}" case Left (x) => s "You passed me the String: $x" }

scala - How to convert Option [Try [_]] to Try [Option [_]]?

WebDec 13, 2024 · To be more precise it may be Seq [Try [String]] or List [Option [Int]]. It’s not a big secret that Scala has a lot of powerful functions for collection manipulations. But in what order it’s better to apply them to achieve the desired result? I prepared multiple examples of how this may be solved. WebDec 4, 2014 · Scala try catch is always an option when writing Scala code for Java like exception control flows. However, you also have the option of start using the Try type. Scala try catch vs Try Try was introduced in Scala 2.10 and behaves as a mappable Either without having to select right or left. In the example below, taken from the Scala API: steel shim cutter

Scala Option conversion to Java - Code Review Stack Exchange

WebJun 22, 2024 · What are Options in Scala? An Option is a container for exactly 0 or 1 instances of any type you specify (e.g. a Boolean, Int, List, etc.). One way to think of an Option is like a box: you... WebDec 4, 2014 · Scala try catch is always an option when writing Scala code for Java like exception control flows. However, you also have the option of start using the Try type. … WebJan 20, 2024 · Unlike Java, Scala offers multiple ways to do it, and we can choose a method that best fits our needs. 3. try/catch/finally The try/catch/finally keyword group is the most familiar way to handle exceptions. Simply put, we wrap the risky code in a try block and the error handling in a catch block. steel shim packers