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 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Automatically generated Scala interpreter transcript from:
 *
 * Programming in Scala (Fifth Edition)
 * by Martin Odersky, Lex Spoon, Bill Venners, and Frank Sommers
 *
 * http://booksites.artima.com/programming_in_scala_5ed
 */


scala>   abstract class Element:
           def contents: Vector[String]
           val height = contents.length
           val width = if height == 0 then 0 else contents(0).length

                               ^
       error: ';' expected but ':' found.
                  val width = if height == 0 then 0 else contents(0).length
                                 ^
On line 4: error: '(' expected but identifier found.
                  val width = if height == 0 then 0 else contents(0).length
                                             ^
On line 4: warning: then is a reserved word (since 2.10.0); usage as an identifier is deprecated

scala>   class VectorElement(conts: Vector[String]) extends Element:
           def contents: Vector[String] = conts

                                                                   ^
       error: ';' expected but ':' found.

scala>   abstract class Element:
           def demo = "Element's implementation invoked"
       
         class VectorElement extends Element:
           override def demo = "VectorElement's implementation invoked"
       

          class LineElement extends VectorElement:
           override def demo = "LineElement's implementation invoked"
       

          // UniformElement inherits Element's demo
         class UniformElement extends Element 

                               ^
       error: ';' expected but ':' found.
                class VectorElement extends Element:
                                                   ^
On line 4: error: ';' expected but ':' found.
          class LineElement extends VectorElement:
                                                 ^
On line 8: error: ';' expected but ':' found.

scala>   def invokeDemo(e: Element) = e.demo

                           ^
       error: not found: type Element

scala>   class VectorElement extends Element:
           final override def demo =
             "VectorElement's implementation invoked"

                                            ^
       error: ';' expected but ':' found.

scala>   class LineElement extends VectorElement:
           override def demo = "LineElement's implementation invoked"
       

                                                ^
       error: ';' expected but ':' found.

scala>   final class VectorElement extends Element:
           override def demo = "VectorElement's implementation invoked"

                                                  ^
       error: ';' expected but ':' found.

scala>   class LineElement extends VectorElement:
           override def demo = "LineElement's implementation invoked"
       

                                                ^
       error: ';' expected but ':' found.

scala>   Vector(1, 2, 3).zip(Vector("a", "b"))

res0: scala.collection.immutable.Vector[(Int, String)] = Vector((1,a), (2,b))