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 * Copyright (C) 2007-2020 Artima, Inc. All rights reserved.
 *
 * 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>   def containsNeg(nums: List[Int]): Boolean =
           var exists = false
           for num <- nums do
             if num < 0 then
               exists = true
           exists

                  var exists = false
                  ^
On line 2: error: illegal start of simple expression
                  for num <- nums do
                      ^
On line 3: error: '(' expected but identifier found.
                    if num < 0 then
                               ^
On line 4: warning: then is a reserved word (since 2.10.0); usage as an identifier is deprecated

scala>   def containsNeg(nums: List[Int]) = nums.exists(_ < 0)

containsNeg: (nums: List[Int])Boolean

scala>   def containsOdd(nums: List[Int]): Boolean =
           var exists = false
           for num <- nums do
             if num % 2 == 1 then
               exists = true
           exists

                  var exists = false
                  ^
On line 2: error: illegal start of simple expression
                  for num <- nums do
                      ^
On line 3: error: '(' expected but identifier found.
                    if num % 2 == 1 then
                                    ^
On line 4: warning: then is a reserved word (since 2.10.0); usage as an identifier is deprecated

scala>   def containsOdd(nums: List[Int]) = nums.exists(_ % 2 == 1)

containsOdd: (nums: List[Int])Boolean

scala>   var assertionsEnabled = true
       
         def myAssert(predicate: () => Boolean) =
           if assertionsEnabled && !predicate() then
             throw new AssertionError

                  if assertionsEnabled && !predicate() then
                     ^
On line 4: error: '(' expected but identifier found.
                  if assertionsEnabled && !predicate() then
                                                       ^
On line 4: warning: then is a reserved word (since 2.10.0); usage as an identifier is deprecated

scala>   def boolAssert(predicate: Boolean) =
           if assertionsEnabled && !predicate then
             throw new AssertionError

                  if assertionsEnabled && !predicate then
                     ^
On line 2: error: '(' expected but identifier found.
                  if assertionsEnabled && !predicate then
                                                     ^
On line 2: warning: then is a reserved word (since 2.10.0); usage as an identifier is deprecated