object TailRecursion extends AnyFlatSpec with ScalaTutorialSection

Linear Supertypes
ScalaTutorialSection, Section, Matchers, Explicitly, MatcherWords, Tolerance, AnyFlatSpec, AnyFlatSpecLike, Documenting, Alerting, Notifying, Informing, CanVerb, MustVerb, ShouldVerb, TestRegistration, TestSuite, Suite, Serializable, Assertions, TripleEquals, TripleEqualsSupport, AnyRef, Any
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Inherited
  1. TailRecursion
  2. ScalaTutorialSection
  3. Section
  4. Matchers
  5. Explicitly
  6. MatcherWords
  7. Tolerance
  8. AnyFlatSpec
  9. AnyFlatSpecLike
  10. Documenting
  11. Alerting
  12. Notifying
  13. Informing
  14. CanVerb
  15. MustVerb
  16. ShouldVerb
  17. TestRegistration
  18. TestSuite
  19. Suite
  20. Serializable
  21. Assertions
  22. TripleEquals
  23. TripleEqualsSupport
  24. AnyRef
  25. Any
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Visibility
  1. Public
  2. Protected

Type Members

  1. final class AWord extends AnyRef
    Definition Classes
    Matchers
  2. final class AnWord extends AnyRef
    Definition Classes
    Matchers
  3. sealed class AnyShouldWrapper[T] extends AnyRef
    Definition Classes
    Matchers
  4. final class BehaviorWord extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  5. class CheckingEqualizer[L] extends AnyRef
    Definition Classes
    TripleEqualsSupport
  6. sealed class Collected extends Serializable
    Attributes
    protected
    Definition Classes
    Matchers
  7. class DecidedByEquality[A] extends Equality[A]
    Definition Classes
    Explicitly
  8. class DecidedWord extends AnyRef
    Definition Classes
    Explicitly
  9. class DeterminedByEquivalence[T] extends Equivalence[T]
    Definition Classes
    Explicitly
  10. class DeterminedWord extends AnyRef
    Definition Classes
    Explicitly
  11. class Equalizer[L] extends AnyRef
    Definition Classes
    TripleEqualsSupport
  12. final class HavePropertyMatcherGenerator extends AnyRef
    Definition Classes
    Matchers
  13. final class IgnoreVerbString extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  14. final class IgnoreVerbStringTaggedAs extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  15. final class IgnoreWord extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  16. final class InAndIgnoreMethods extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  17. final class InAndIgnoreMethodsAfterTaggedAs extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  18. final class ItVerbString extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  19. final class ItVerbStringTaggedAs extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  20. final class ItWord extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  21. final class KeyWord extends AnyRef
    Definition Classes
    Matchers
  22. trait NoArgTest extends () => Outcome with TestData
    Attributes
    protected
    Definition Classes
    TestSuite
  23. final class PlusOrMinusWrapper[T] extends AnyRef
    Definition Classes
    Tolerance
  24. final class RegexWord extends AnyRef
    Definition Classes
    Matchers
  25. final class RegexWrapper extends AnyRef
    Definition Classes
    Matchers
  26. class ResultOfBeWordForAny[T] extends AnyRef
    Definition Classes
    Matchers
  27. sealed class ResultOfBeWordForCollectedAny[T] extends AnyRef
    Definition Classes
    Matchers
  28. final class ResultOfBeWordForCollectedArray[T] extends ResultOfBeWordForCollectedAny[Array[T]]
    Definition Classes
    Matchers
  29. final class ResultOfCollectedAny[T] extends AnyRef
    Definition Classes
    Matchers
  30. final class ResultOfContainWordForCollectedAny[T] extends AnyRef
    Definition Classes
    Matchers
  31. final class ResultOfEndWithWordForCollectedString extends AnyRef
    Definition Classes
    Matchers
  32. final class ResultOfEndWithWordForString extends AnyRef
    Definition Classes
    Matchers
  33. final class ResultOfFullyMatchWordForCollectedString extends AnyRef
    Definition Classes
    Matchers
  34. final class ResultOfFullyMatchWordForString extends AnyRef
    Definition Classes
    Matchers
  35. final class ResultOfHaveWordForCollectedExtent[A] extends AnyRef
    Definition Classes
    Matchers
  36. final class ResultOfHaveWordForExtent[A] extends AnyRef
    Definition Classes
    Matchers
  37. final class ResultOfIncludeWordForCollectedString extends AnyRef
    Definition Classes
    Matchers
  38. final class ResultOfIncludeWordForString extends AnyRef
    Definition Classes
    Matchers
  39. final class ResultOfNotWordForCollectedAny[T] extends AnyRef
    Definition Classes
    Matchers
  40. final class ResultOfStartWithWordForCollectedString extends AnyRef
    Definition Classes
    Matchers
  41. final class ResultOfStartWithWordForString extends AnyRef
    Definition Classes
    Matchers
  42. trait StringCanWrapperForVerb extends AnyRef
    Definition Classes
    CanVerb
  43. trait StringMustWrapperForVerb extends AnyRef
    Definition Classes
    MustVerb
  44. final class StringShouldWrapper extends AnyShouldWrapper[String] with org.scalatest.matchers.should.Matchers.StringShouldWrapperForVerb
    Definition Classes
    Matchers
  45. trait StringShouldWrapperForVerb extends AnyRef
    Definition Classes
    ShouldVerb
  46. class TheAfterWord extends AnyRef
    Definition Classes
    Explicitly
  47. final class TheSameInstanceAsPhrase extends AnyRef
    Definition Classes
    Matchers
  48. final class TheyVerbString extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  49. final class TheyVerbStringTaggedAs extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  50. final class TheyWord extends AnyRef
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  51. final class ValueWord extends AnyRef
    Definition Classes
    Matchers

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. def !==[T](right: Spread[T]): TripleEqualsInvocationOnSpread[T]
    Definition Classes
    TripleEqualsSupport
  3. def !==(right: Null): TripleEqualsInvocation[Null]
    Definition Classes
    TripleEqualsSupport
  4. def !==[T](right: T): TripleEqualsInvocation[T]
    Definition Classes
    TripleEqualsSupport
  5. final def ##: Int
    Definition Classes
    AnyRef → Any
  6. def <[T](right: T)(implicit arg0: Ordering[T]): ResultOfLessThanComparison[T]
    Definition Classes
    Matchers
  7. def <=[T](right: T)(implicit arg0: Ordering[T]): ResultOfLessThanOrEqualToComparison[T]
    Definition Classes
    Matchers
  8. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def ===[T](right: Spread[T]): TripleEqualsInvocationOnSpread[T]
    Definition Classes
    TripleEqualsSupport
  10. def ===(right: Null): TripleEqualsInvocation[Null]
    Definition Classes
    TripleEqualsSupport
  11. def ===[T](right: T): TripleEqualsInvocation[T]
    Definition Classes
    TripleEqualsSupport
  12. def >[T](right: T)(implicit arg0: Ordering[T]): ResultOfGreaterThanComparison[T]
    Definition Classes
    Matchers
  13. def >=[T](right: T)(implicit arg0: Ordering[T]): ResultOfGreaterThanOrEqualToComparison[T]
    Definition Classes
    Matchers
  14. def a[T](implicit arg0: ClassTag[T]): ResultOfATypeInvocation[T]
    Definition Classes
    Matchers
  15. val a: AWord
    Definition Classes
    Matchers
  16. val after: TheAfterWord
    Definition Classes
    Explicitly
  17. def alert: Alerter
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike → Alerting
  18. def all(xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  19. def all[K, V, JMAP[k, v] <: Map[k, v]](xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  20. def all[K, V, MAP[k, v] <: GenMap[k, v]](xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
    Definition Classes
    Matchers
  21. def all[E, C[_]](xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  22. def allElementsOf[R](elements: GenTraversable[R]): ResultOfAllElementsOfApplication
    Definition Classes
    Matchers
  23. def allOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfAllOfApplication
    Definition Classes
    Matchers
  24. def an[T](implicit arg0: ClassTag[T]): ResultOfAnTypeInvocation[T]
    Definition Classes
    Matchers
  25. val an: AnWord
    Definition Classes
    Matchers
  26. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  27. macro def assert(condition: Boolean, clue: Any)(implicit prettifier: Prettifier, pos: Position): Assertion
    Definition Classes
    Assertions
  28. macro def assert(condition: Boolean)(implicit prettifier: Prettifier, pos: Position): Assertion
    Definition Classes
    Assertions
  29. macro def assertCompiles(code: String)(implicit pos: Position): Assertion
    Definition Classes
    Assertions
  30. macro def assertDoesNotCompile(code: String)(implicit pos: Position): Assertion
    Definition Classes
    Assertions
  31. def assertResult(expected: Any)(actual: Any)(implicit prettifier: Prettifier, pos: Position): Assertion
    Definition Classes
    Assertions
  32. def assertResult(expected: Any, clue: Any)(actual: Any)(implicit prettifier: Prettifier, pos: Position): Assertion
    Definition Classes
    Assertions
  33. def assertThrows[T <: AnyRef](f: => Any)(implicit classTag: ClassTag[T], pos: Position): Assertion
    Definition Classes
    Assertions
  34. macro def assertTypeError(code: String)(implicit pos: Position): Assertion
    Definition Classes
    Assertions
  35. macro def assume(condition: Boolean, clue: Any)(implicit prettifier: Prettifier, pos: Position): Assertion
    Definition Classes
    Assertions
  36. macro def assume(condition: Boolean)(implicit prettifier: Prettifier, pos: Position): Assertion
    Definition Classes
    Assertions
  37. def atLeast(num: Int, xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  38. def atLeast[K, V, JMAP[k, v] <: Map[k, v]](num: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  39. def atLeast[K, V, MAP[k, v] <: GenMap[k, v]](num: Int, xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
    Definition Classes
    Matchers
  40. def atLeast[E, C[_]](num: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  41. def atLeastOneElementOf(elements: GenTraversable[Any]): ResultOfAtLeastOneElementOfApplication
    Definition Classes
    Matchers
  42. def atLeastOneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfAtLeastOneOfApplication
    Definition Classes
    Matchers
  43. def atMost(num: Int, xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  44. def atMost[K, V, JMAP[k, v] <: Map[k, v]](num: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  45. def atMost[K, V, MAP[k, v] <: GenMap[k, v]](num: Int, xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
    Definition Classes
    Matchers
  46. def atMost[E, C[_]](num: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  47. def atMostOneElementOf[R](elements: GenTraversable[R]): ResultOfAtMostOneElementOfApplication
    Definition Classes
    Matchers
  48. def atMostOneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfAtMostOneOfApplication
    Definition Classes
    Matchers
  49. val be: BeWord
    Definition Classes
    MatcherWords
  50. val behave: BehaveWord
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  51. val behavior: BehaviorWord
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  52. def between(from: Int, upTo: Int, xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  53. def between[K, V, JMAP[k, v] <: Map[k, v]](from: Int, upTo: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  54. def between[E, C[_]](from: Int, upTo: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  55. def cancel(cause: Throwable)(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  56. def cancel(message: String, cause: Throwable)(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  57. def cancel(message: String)(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  58. def cancel()(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  59. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  60. val compile: CompileWord
    Definition Classes
    MatcherWords
  61. val contain: ContainWord
    Definition Classes
    MatcherWords
  62. def convertEquivalenceToAToBConstraint[A, B](equivalenceOfB: Equivalence[B])(implicit ev: <:<[A, B]): CanEqual[A, B]
    Definition Classes
    TripleEquals → TripleEqualsSupport
  63. def convertEquivalenceToBToAConstraint[A, B](equivalenceOfA: Equivalence[A])(implicit ev: <:<[B, A]): CanEqual[A, B]
    Definition Classes
    TripleEquals → TripleEqualsSupport
  64. implicit def convertNumericToPlusOrMinusWrapper[T](pivot: T)(implicit arg0: Numeric[T]): PlusOrMinusWrapper[T]
    Definition Classes
    Tolerance
  65. implicit def convertSymbolToHavePropertyMatcherGenerator(symbol: Symbol)(implicit prettifier: Prettifier, pos: Position): HavePropertyMatcherGenerator
    Definition Classes
    Matchers
  66. implicit def convertToAnyShouldWrapper[T](o: T)(implicit pos: Position, prettifier: Prettifier): AnyShouldWrapper[T]
    Definition Classes
    Matchers
  67. def convertToCheckingEqualizer[T](left: T): CheckingEqualizer[T]
    Definition Classes
    TripleEquals → TripleEqualsSupport
  68. implicit def convertToEqualizer[T](left: T): Equalizer[T]
    Definition Classes
    TripleEquals → TripleEqualsSupport
  69. implicit def convertToInAndIgnoreMethods(resultOfStringPassedToVerb: ResultOfStringPassedToVerb): InAndIgnoreMethods
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  70. implicit def convertToInAndIgnoreMethodsAfterTaggedAs(resultOfTaggedAsInvocation: ResultOfTaggedAsInvocation): InAndIgnoreMethodsAfterTaggedAs
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  71. implicit def convertToRegexWrapper(o: Regex): RegexWrapper
    Definition Classes
    Matchers
  72. implicit def convertToStringCanWrapper(o: String)(implicit position: Position): StringCanWrapperForVerb
    Definition Classes
    CanVerb
  73. implicit def convertToStringMustWrapperForVerb(o: String)(implicit position: Position): StringMustWrapperForVerb
    Definition Classes
    MustVerb
  74. implicit def convertToStringShouldWrapper(o: String)(implicit pos: Position, prettifier: Prettifier): StringShouldWrapper
    Definition Classes
    Matchers
  75. implicit def convertToStringShouldWrapperForVerb(o: String)(implicit position: Position): StringShouldWrapperForVerb
    Definition Classes
    ShouldVerb
  76. val decided: DecidedWord
    Definition Classes
    Explicitly
  77. def defaultEquality[A]: Equality[A]
    Definition Classes
    TripleEqualsSupport
  78. val defined: DefinedWord
    Definition Classes
    MatcherWords
  79. def definedAt[T](right: T): ResultOfDefinedAt[T]
    Definition Classes
    Matchers
  80. val determined: DeterminedWord
    Definition Classes
    Explicitly
  81. val empty: EmptyWord
    Definition Classes
    MatcherWords
  82. val endWith: EndWithWord
    Definition Classes
    MatcherWords
  83. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  84. def equal(o: Null): Matcher[AnyRef]
    Definition Classes
    Matchers
  85. def equal[T](spread: Spread[T]): Matcher[T]
    Definition Classes
    Matchers
  86. def equal(right: Any): MatcherFactory1[Any, Equality]
    Definition Classes
    MatcherWords
  87. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  88. def every(xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  89. def every[K, V, JMAP[k, v] <: Map[k, v]](xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  90. def every[K, V, MAP[k, v] <: Map[k, v]](xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
    Definition Classes
    Matchers
  91. def every[E, C[_]](xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  92. def exactly(num: Int, xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  93. def exactly[K, V, JMAP[k, v] <: Map[k, v]](num: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  94. def exactly[K, V, MAP[k, v] <: GenMap[k, v]](num: Int, xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
    Definition Classes
    Matchers
  95. def exactly[E, C[_]](num: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  96. final def execute(testName: String, configMap: ConfigMap, color: Boolean, durations: Boolean, shortstacks: Boolean, fullstacks: Boolean, stats: Boolean): Unit
    Definition Classes
    Suite
  97. val exist: ExistWord
    Definition Classes
    MatcherWords
  98. def expectedTestCount(filter: Filter): Int
    Definition Classes
    Suite
  99. def fail(cause: Throwable)(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  100. def fail(message: String, cause: Throwable)(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  101. def fail(message: String)(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  102. def fail()(implicit pos: Position): Nothing
    Definition Classes
    Assertions
  103. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  104. val fullyMatch: FullyMatchWord
    Definition Classes
    MatcherWords
  105. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  106. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  107. val have: HaveWord
    Definition Classes
    MatcherWords
  108. val ignore: IgnoreWord
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  109. def inOrder(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfInOrderApplication
    Definition Classes
    Matchers
  110. def inOrderElementsOf[R](elements: GenTraversable[R]): ResultOfInOrderElementsOfApplication
    Definition Classes
    Matchers
  111. def inOrderOnly[T](firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfInOrderOnlyApplication
    Definition Classes
    Matchers
  112. val include: IncludeWord
    Definition Classes
    MatcherWords
  113. def info: Informer
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike → Informing
  114. def intercept[T <: AnyRef](f: => Any)(implicit classTag: ClassTag[T], pos: Position): T
    Definition Classes
    Assertions
  115. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  116. val it: ItWord
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike
  117. val key: KeyWord
    Definition Classes
    Matchers
  118. val length: LengthWord
    Definition Classes
    MatcherWords
  119. def lowPriorityTypeCheckedConstraint[A, B](implicit equivalenceOfB: Equivalence[B], ev: <:<[A, B]): CanEqual[A, B]
    Definition Classes
    TripleEquals → TripleEqualsSupport
  120. def markup: Documenter
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike → Documenting
  121. val matchPattern: MatchPatternWord
    Definition Classes
    MatcherWords
  122. def message(expectedMessage: String): ResultOfMessageWordApplication
    Definition Classes
    Matchers
  123. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  124. def nestedSuites: IndexedSeq[Suite]
    Definition Classes
    Suite
  125. def no(xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
    Definition Classes
    Matchers
  126. def no[K, V, JMAP[k, v] <: Map[k, v]](xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
    Definition Classes
    Matchers
  127. def no[E, C[_]](xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
    Definition Classes
    Matchers
  128. def noElementsOf(elements: GenTraversable[Any]): ResultOfNoElementsOfApplication
    Definition Classes
    Matchers
  129. def noException(implicit pos: Position): NoExceptionWord
    Definition Classes
    MatcherWords
  130. def noneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfNoneOfApplication
    Definition Classes
    Matchers
  131. val not: NotWord
    Definition Classes
    MatcherWords
  132. def note: Notifier
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike → Notifying
  133. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  134. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  135. def of[T](implicit ev: ClassTag[T]): ResultOfOfTypeInvocation[T]
    Definition Classes
    Matchers
  136. def oneElementOf(elements: GenTraversable[Any]): ResultOfOneElementOfApplication
    Definition Classes
    Matchers
  137. def oneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfOneOfApplication
    Definition Classes
    Matchers
  138. def only(xs: Any*)(implicit pos: Position): ResultOfOnlyApplication
    Definition Classes
    Matchers
  139. def pending: Assertion with PendingStatement
    Definition Classes
    Assertions
  140. def pendingUntilFixed(f: => Unit)(implicit pos: Position): Assertion with PendingStatement
    Definition Classes
    Assertions
  141. val readable: ReadableWord
    Definition Classes
    MatcherWords
  142. val regex: RegexWord
    Definition Classes
    Matchers
  143. final def registerIgnoredTest(testText: String, testTags: Tag*)(testFun: => Any)(implicit pos: Position): Unit
    Definition Classes
    AnyFlatSpecLike → TestRegistration
  144. final def registerTest(testText: String, testTags: Tag*)(testFun: => Any)(implicit pos: Position): Unit
    Definition Classes
    AnyFlatSpecLike → TestRegistration
  145. def rerunner: Option[String]
    Definition Classes
    Suite
  146. def run(testName: Option[String], args: Args): Status
    Definition Classes
    AnyFlatSpecLike → Suite
  147. def runNestedSuites(args: Args): Status
    Attributes
    protected
    Definition Classes
    Suite
  148. def runTest(testName: String, args: Args): Status
    Attributes
    protected
    Definition Classes
    AnyFlatSpecLike → TestSuite → Suite
  149. def runTests(testName: Option[String], args: Args): Status
    Attributes
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  150. implicit val shorthandSharedTestRegistrationFunction: StringVerbBehaveLikeInvocation
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  151. implicit val shorthandTestRegistrationFunction: StringVerbStringInvocation
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  152. val size: SizeWord
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  153. val sorted: SortedWord
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  154. val startWith: StartWithWord
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  155. final val succeed: Assertion
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  156. def suiteId: String
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  157. def suiteName: String
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  158. final def synchronized[T0](arg0: => T0): T0
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  159. def tags: Map[String, Set[String]]
    Definition Classes
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  160. def tailRecFactorial(res0: Int, res1: Int): Unit

    Let’s compare the evaluation steps of the application of two recursive methods.

    Recursive Function Application

    Let’s compare the evaluation steps of the application of two recursive methods.

    First, consider gcd, a method that computes the greatest common divisor of two numbers.

    Here's an implementation of gcd using Euclid's algorithm.

    def gcd(a: Int, b: Int): Int =
  if (b == 0) a else gcd(b, a % b)

    gcd(14, 21) is evaluated as follows:

    gcd(14, 21)
if (21 == 0) 14 else gcd(21, 14 % 21)
if (false) 14 else gcd(21, 14 % 21)
gcd(21, 14 % 21)
gcd(21, 14)
if (14 == 0) 21 else gcd(14, 21 % 14)
if (false) 21 else gcd(14, 21 % 14)
gcd(14, 7)
gcd(7, 14 % 7)
gcd(7, 0)
if (0 == 0) 7 else gcd(0, 7 % 0)
if (true) 7 else gcd(0, 7 % 0)
7

    Now, consider factorial:

    def factorial(n: Int): Int =
  if (n == 0) 1 else n * factorial(n - 1)

    factorial(4) is evaluated as follows:

    factorial(4)
if (4 == 0) 1 else 4 * factorial(4 - 1)
4 * factorial(3)
4 * (3 * factorial(2))
4 * (3 * (2 * factorial(1)))
4 * (3 * (2 * (1 * factorial(0)))
4 * (3 * (2 * (1 * 1)))
24

    What are the differences between the two sequences?

    One important difference is that in the case of gcd, we see that the reduction sequence essentially oscillates. It goes from one call to gcd to the next one, and eventually it terminates. In between we have expressions that are different from a simple call like if then else's but we always come back to this shape of the call of gcd. If we look at factorial, on the other hand we see that in each couple of steps we add one more element to our expressions. Our expressions becomes bigger and bigger until we end when we finally reduce it to the final value.

    Tail Recursion

    That difference in the rewriting rules actually translates directly to a difference in the actual execution on a computer. In fact, it turns out that if you have a recursive function that calls itself as its last action, then you can reuse the stack frame of that function. This is called tail recursion.

    And by applying that trick, a tail recursive function can execute in constant stack space, so it's really just another formulation of an iterative process. We could say a tail recursive function is the functional form of a loop, and it executes just as efficiently as a loop.

    If we look back at gcd, we see that in the else part, gcd calls itself as its last action. And that translates to a rewriting sequence that was essentially constant in size, and that will, in the actual execution on a computer, translate into a tail recursive call that can execute in constant space.

    On the other hand, if you look at factorial again, then you'll see that after the call to factorial(n - 1), there is still work to be done, namely, we had to multiply the result of that call with the number n. So, that recursive call is not a tail recursive call, and it becomes evident in the reduction sequence, where you see that actually there’s a buildup of intermediate results that we all have to keep until we can compute the final value. So, factorial would not be a tail recursive function.

    Both factorial and gcd only call itself but in general, of course, a function could call other functions. So the generalization of tail recursion is that, if the last action of a function consists of calling another function, maybe the same, maybe some other function, the stack frame could be reused for both functions. Such calls are called tail calls.

    Tail Recursion in Scala

    In Scala, only directly recursive calls to the current function are optimized.

    One can require that a function is tail-recursive using a @tailrec annotation:

    @tailrec
def gcd(a: Int, b: Int): Int = …

    If the annotation is given, and the implementation of gcd were not tail recursive, an error would be issued.

    Exercise

    Complete the following definition of a tail-recursive version of factorial:

  161. def testDataFor(testName: String, theConfigMap: ConfigMap): TestData
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  162. def testNames: Set[String]
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  163. def the[T](implicit arg0: ClassTag[T], pos: Position): ResultOfTheTypeInvocation[T]
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  164. def theSameElementsAs(xs: GenTraversable[_]): ResultOfTheSameElementsAsApplication
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  165. def theSameElementsInOrderAs(xs: GenTraversable[_]): ResultOfTheSameElementsInOrderAsApplication
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  166. val theSameInstanceAs: TheSameInstanceAsPhrase
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  167. val they: TheyWord
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  168. def thrownBy(fun: => Any): ResultOfThrownByApplication
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  169. def toString(): String
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  170. val typeCheck: TypeCheckWord
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  171. def typeCheckedConstraint[A, B](implicit equivalenceOfA: Equivalence[A], ev: <:<[B, A]): CanEqual[A, B]
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  172. implicit def unconstrainedEquality[A, B](implicit equalityOfA: Equality[A]): CanEqual[A, B]
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  173. val value: ValueWord
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  174. final def wait(): Unit
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  175. final def wait(arg0: Long, arg1: Int): Unit
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  176. final def wait(arg0: Long): Unit
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  177. def withClue[T](clue: Any)(fun: => T): T
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  178. def withFixture(test: NoArgTest): Outcome
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  179. val writable: WritableWord
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Deprecated Value Members

  1. def conversionCheckedConstraint[A, B](implicit equivalenceOfA: Equivalence[A], cnv: (B) => A): CanEqual[A, B]
    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 3.1.0) The conversionCheckedConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.

  2. def convertEquivalenceToAToBConversionConstraint[A, B](equivalenceOfB: Equivalence[B])(implicit ev: (A) => B): CanEqual[A, B]
    Definition Classes
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    @deprecated
    Deprecated

    (Since version 3.1.0) The convertEquivalenceToAToBConversionConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.

  3. def convertEquivalenceToBToAConversionConstraint[A, B](equivalenceOfA: Equivalence[A])(implicit ev: (B) => A): CanEqual[A, B]
    Definition Classes
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    @deprecated
    Deprecated

    (Since version 3.1.0) The convertEquivalenceToBToAConversionConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.

  4. def lowPriorityConversionCheckedConstraint[A, B](implicit equivalenceOfB: Equivalence[B], cnv: (A) => B): CanEqual[A, B]
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    @deprecated
    Deprecated

    (Since version 3.1.0) The lowPriorityConversionCheckedConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.

  5. final val styleName: String
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    @deprecated
    Deprecated

    (Since version 3.1.0) The styleName lifecycle method has been deprecated and will be removed in a future version of ScalaTest with no replacement.

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