From 7f94d2b115fd43d37d1461014ef48c08f3e016c3 Mon Sep 17 00:00:00 2001
From: Luc Henninger <luc.henninger@orange.fr>
Date: Mon, 5 Sep 2022 16:53:33 +0200
Subject: [PATCH] Compare Scala 2 vs Scala 3 with tabs in Tour of Scala / Named
 Arguments

This is a simple page, so a good first try for document update :-) Waiting for feedback.
---
 _tour/named-arguments.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/_tour/named-arguments.md b/_tour/named-arguments.md
index af82d72844..37c345868d 100644
--- a/_tour/named-arguments.md
+++ b/_tour/named-arguments.md
@@ -15,6 +15,9 @@ redirect_from:
 
 When calling methods, you can label the arguments with their parameter names like so:
 
+{% tabs named-arguments-when-good class=tabs-scala-version %}
+
+{% tab 'Scala 2' for=named-arguments-when-good %}
 ```scala mdoc
 def printName(first: String, last: String): Unit = {
   println(first + " " + last)
@@ -24,10 +27,31 @@ printName("John", "Smith")  // Prints "John Smith"
 printName(first = "John", last = "Smith")  // Prints "John Smith"
 printName(last = "Smith", first = "John")  // Prints "John Smith"
 ```
+{% endtab %}
+
+{% tab 'Scala 3' for=named-arguments-when-good %}
+```scala mdoc
+def printName(first: String, last: String): Unit =
+  println(first + " " + last)
+
+printName("John", "Smith")  // Prints "John Smith"
+printName(first = "John", last = "Smith")  // Prints "John Smith"
+printName(last = "Smith", first = "John")  // Prints "John Smith"
+```
+{% endtab %}
+
+{% endtabs %}
+
 Notice how the order of named arguments can be rearranged. However, if some arguments are named and others are not, the unnamed arguments must come first and in the order of their parameters in the method signature.
 
+{% tabs scala-2-and-3-demo %}
+
+{% tab 'Scala 2 and 3' for=named-arguments-when-error %}
 ```scala mdoc:fail
 printName(last = "Smith", "john") // error: positional after named argument
 ```
+{% endtab %}
+
+{% endtabs %}
 
 Named arguments work with calls to Java methods, but only if the Java library in question was compiled with `-parameters`.