net.liftweb.util

BasicTypesHelpers

trait BasicTypesHelpers extends AnyRef

This trait adds functionality to Scala standard types

go to: companion
linear super types: AnyRef, Any
known subclasses: Helpers, BasicTypesHelpers
self type: BasicTypesHelpers with StringHelpers with ControlHelpers
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Impl.
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Type Members

  1. class Boolean2 extends AnyRef

    This decorator class adds a ternary operator to a Boolean value

Value Members

  1. def != (arg0: AnyRef) : Boolean

    attributes: final
    definition classes: AnyRef
  2. def != (arg0: Any) : Boolean

    o != arg0 is the same as !(o == (arg0)).

    o != arg0 is the same as !(o == (arg0)).

    arg0

    the object to compare against this object for dis-equality.

    returns

    false if the receiver object is equivalent to the argument; true otherwise.

    attributes: final
    definition classes: Any
  3. def ## () : Int

    attributes: final
    definition classes: AnyRef → Any
  4. def $asInstanceOf [T0] () : T0

    attributes: final
    definition classes: AnyRef
  5. def $isInstanceOf [T0] () : Boolean

    attributes: final
    definition classes: AnyRef
  6. def == (arg0: AnyRef) : Boolean

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    attributes: final
    definition classes: AnyRef
  7. def == (arg0: Any) : Boolean

    o == arg0 is the same as o.equals(arg0).

    o == arg0 is the same as o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    attributes: final
    definition classes: Any
  8. object AsBoolean extends AnyRef

    A helpful Boolean extractor

  9. object AsDouble extends AnyRef

    A helpful Int extractor

  10. object AsInt extends AnyRef

    A helpful Int extractor

  11. object AsLong extends AnyRef

    A helpful Long extractor

  12. def asBoolean (in: String) : Box[Boolean]

    A helper that will convert the String to a Boolean if it's t, true, yes, 1, f, false, no, or 0

    A helper that will convert the String to a Boolean if it's t, true, yes, 1, f, false, no, or 0

  13. def asDouble (in: String) : Box[Double]

    Safely convert the specified String to an Int.

    Safely convert the specified String to an Int.

  14. def asInstanceOf [T0] : T0

    This method is used to cast the receiver object to be of type T0.

    This method is used to cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expressionList(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested typed.

    returns

    the receiver object.

    attributes: final
    definition classes: Any
  15. def asInt (in: String) : Box[Int]

    Safely convert the specified String to an Int.

    Safely convert the specified String to an Int.

  16. def asLong (in: Any) : Box[Long]

    Convert any object to an "equivalent" Long depending on its value

    Convert any object to an "equivalent" Long depending on its value

  17. def asLong (in: String) : Box[Long]

    Safely convert the specified String to a Long.

    Safely convert the specified String to a Long.

  18. implicit def boolean2 (b: ⇒ Boolean) : Boolean2

    Allows an implicit transform from a Boolean to a Boolean2, allowing expressions such as:(1 == 2) ? "a" | "b" (This expression will return "b")

    Allows an implicit transform from a Boolean to a Boolean2, allowing expressions such as:(1 == 2) ? "a" | "b" (This expression will return "b")

    b

    the predicate to be tested by the ternary operator.

    attributes: implicit
  19. def clone () : AnyRef

    This method creates and returns a copy of the receiver object.

    This method creates and returns a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    attributes: protected
    definition classes: AnyRef
  20. def eq (arg0: AnyRef) : Boolean

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation] on non-null instances of AnyRef: * It is reflexive: for any non-null instance x of type AnyRef, x.eq(x) returns true. * It is symmetric: for any non-null instances x and y of type AnyRef, x.eq(y) returns true if and only if y.eq(x) returns true. * It is transitive: for any non-null instances x, y, and z of type AnyRef if x.eq(y) returns true and y.eq(z) returns true, then x.eq(z) returns true.

    Additionally, the eq method has three other properties. * It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false. * For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false. * null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    arg0

    the object to compare against this object for reference equality.

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    attributes: final
    definition classes: AnyRef
  21. def equals (arg0: Any) : Boolean

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    The default implementations of this method is an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation]: * It is reflexive: for any instance x of type Any, x.equals(x) should return true. * It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true. * It is transitive: for any instances x, y, and z of type AnyRef if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same scala.Int (o1.hashCode.equals(o2.hashCode)).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    definition classes: AnyRef → Any
  22. def finalize () : Unit

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

    The details of when and if the finalize method are invoked, as well as the interaction between finalizeand non-local returns and exceptions, are all platform dependent.

    attributes: protected
    definition classes: AnyRef
  23. def getClass () : java.lang.Class[_]

    Returns a representation that corresponds to the dynamic class of the receiver object.

    Returns a representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

    a representation that corresponds to the dynamic class of the receiver object.

    attributes: final
    definition classes: AnyRef
  24. def hashCode () : Int

    Returns a hash code value for the object.

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

    returns

    the hash code value for the object.

    definition classes: AnyRef → Any
  25. def isEq (a: Array[Byte], b: Array[Byte]) : Boolean

    Compare two arrays of Byte for byte equality.

    Compare two arrays of Byte for byte equality.

    returns

    true if two Byte arrays contain the same bytes

  26. def isInstanceOf [T0] : Boolean

    This method is used to test whether the dynamic type of the receiver object is T0.

    This method is used to test whether the dynamic type of the receiver object is T0.

    Note that the test result of the test is modulo Scala's erasure semantics. Therefore the expression1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested typed.

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    attributes: final
    definition classes: Any
  27. def ne (arg0: AnyRef) : Boolean

    o.ne(arg0) is the same as !(o.eq(arg0)).

    o.ne(arg0) is the same as !(o.eq(arg0)).

    arg0

    the object to compare against this object for reference dis-equality.

    returns

    false if the argument is not a reference to the receiver object; true otherwise.

    attributes: final
    definition classes: AnyRef
  28. def notEq (a: Array[Byte], b: Array[Byte]) : Boolean

    Compare two arrays of Byte for byte equality.

    Compare two arrays of Byte for byte equality.

    returns

    true if two Byte arrays don't contain the same bytes

  29. def notify () : Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    attributes: final
    definition classes: AnyRef
  30. def notifyAll () : Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    attributes: final
    definition classes: AnyRef
  31. implicit def pfToGuardable [A] (in: PartialFunction[A, _]) : PartialFunctionWrapper[A]

    promote a partial function such that we can invoke the guard method to wrap the guarded partial function with a guard

    promote a partial function such that we can invoke the guard method to wrap the guarded partial function with a guard

    attributes: implicit
  32. def synchronized [T0] (arg0: T0) : T0

    attributes: final
    definition classes: AnyRef
  33. def toBoolean (in: Any) : Boolean

    Convert any object to an "equivalent" Boolean depending on its value

    Convert any object to an "equivalent" Boolean depending on its value

  34. def toByteArrayInputStream (in: InputStream) : ByteArrayInputStream

    Convert any InputStream to a ByteArrayInputStream

    Convert any InputStream to a ByteArrayInputStream

  35. def toInt (in: Any) : Int

    Convert any object to an "equivalent" Int depending on its value

    Convert any object to an "equivalent" Int depending on its value

  36. def toLong (in: Any) : Long

    Convert any object to an "equivalent" Long depending on its value

    Convert any object to an "equivalent" Long depending on its value

  37. implicit def toOptiCons (expr: ⇒ Boolean) : OptionalCons

    Implicit transformation from a Boolean expression to an OptionalCons object so that an element can be added to a list if the expression is true

    Implicit transformation from a Boolean expression to an OptionalCons object so that an element can be added to a list if the expression is true

    attributes: implicit
  38. def toString () : String

    Returns a string representation of the object.

    Returns a string representation of the object.

    The default representation is platform dependent.

    returns

    a string representation of the object.

    definition classes: AnyRef → Any
  39. def wait () : Unit

    attributes: final
    definition classes: AnyRef
  40. def wait (arg0: Long, arg1: Int) : Unit

    attributes: final
    definition classes: AnyRef
  41. def wait (arg0: Long) : Unit

    attributes: final
    definition classes: AnyRef

Inherited from AnyRef

Inherited from Any