Use a Scala file instead of worksheet

src/main/scala/ed/39368.scala

+// To demonstrate different ways of pattern matching, let's consider the
+// following example case class and instance:
+case class Person(name: String, age: Int)
+val ada = Person("Ada", 36)
+
+// Run using `sbt "runMain ed.patternMatching"`.
+@main def patternMatching =
+    // There are several ways to pattern match on the `ada` instance:
+    // 1. Pattern matching on the case class constructor using `Person(name, age)`.
+    //    If the pattern matches, the value of `n` is bound `ada.name` field, and
+    //    `a` is bound to the `ada.age` field.
+    ada match
+        case Person(n, a) => println(f"$n is $a years old")
+
+    // 2. We can also check only that `ada` is of type `Person` without binding its
+    //    fields by using a `:` pattern. The `:` pattern is used to check if a value is
+    //    of a certain type.
+    ada match
+        case p: Person => println(f"${p.name} is ${p.age} years old")
+
+    // 3. If we want to both bind the fields and bind a value to the whole instance,
+    //    we can use an `@` pattern.
+    ada match
+        case p @ Person(n, a) => println(f"${p.name} is ${a} years old")

src/main/scala/ed/39368.worksheet.sc

-// To demonstrate different ways of pattern matching, let's consider the
-// following example case class and instance:
-case class Person(name: String, age: Int)
-val ada = Person("Ada", 36)
-
-// There are several ways to pattern match on the `ada` instance:
-// 1. Pattern matching on the case class constructor using `Person(name, age)`.
-//    If the pattern matches, the value of `n` is bound `ada.name` field, and
-//    `a` is bound to the `ada.age` field.
-ada match
-  case Person(n, a) => s"$n is $a years old"
-
-// 2. We can also check only that `ada` is of type `Person` without binding its
-//    fields by using a `:` pattern. The `:` pattern is used to check if a value is
-//    of a certain type.
-ada match
-  case p: Person => s"${p.name} is ${p.age} years old"
-
-// 3. If we want to both bind the fields and bind a value to the whole instance,
-//    we can use an `@` pattern.
-ada match
-  case p @ Person(n, a) => s"${p.name} is ${a} years old"