scala.sys

Prop

trait Prop[+T] extends AnyRef

A lightweight interface wrapping a property contained in some unspecified map. Generally it'll be the system properties but this is not a requirement.

See scala.sys.SystemProperties for an example usage.

Source
Prop.scala
Version

2.9

Since

2.9

Linear Supertypes
AnyRef, Any
Known Subclasses
BooleanProp
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Inherited
  1. Prop
  2. AnyRef
  3. Any
Implicitly
  1. by StringAdd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Abstract Value Members

  1. abstract def clear(): Unit

    Removes the property from the underlying map.

  2. abstract def get: String

    Gets the current string value if any.

    Gets the current string value if any. Will not return null: use isSet to test for existence.

    returns

    the current string value if any, else the empty string

  3. abstract def isSet: Boolean

    True if the key exists in the properties map.

    True if the key exists in the properties map. Note that this is not sufficient for a Boolean property to be considered true.

    returns

    whether the map contains the key

  4. abstract def key: String

    The full name of the property, e.

    The full name of the property, e.g. "java.awt.headless".

  5. abstract def option: Option[T]

    Some(value) if the property is set, None otherwise.

  6. abstract def set(newValue: String): String

    Sets the property.

    Sets the property.

    newValue

    the new string value

    returns

    the old value, or null if it was unset.

  7. abstract def setValue[T1 >: T](value: T1): T

    Sets the property with a value of the represented type.

  8. abstract def value: T

    If the key exists in the properties map, converts the value to type T using valueFn.

    If the key exists in the properties map, converts the value to type T using valueFn. As yet no validation is performed: it will throw an exception on a failed conversion.

    returns

    the converted value, or zero if not in the map

  9. abstract def zero: T

    A value of type T for use when the property is unset.

    A value of type T for use when the property is unset. The default implementation delivers null for reference types and 0/0.0/false for non-reference types.

    Attributes
    protected

Concrete Value Members

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

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. def +(other: String): String

    Implicit information
    This member is added by an implicit conversion from Prop[T] to StringAdd[Prop[T]] performed by method StringAdd in scala.Predef.
    Definition Classes
    StringAdd

  5. def ->[B](y: B): (Prop[T], B)

    Implicit information
    This member is added by an implicit conversion from Prop[T] to ArrowAssoc[Prop[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  6. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  7. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  8. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  9. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  10. def ensuring(cond: (Prop[T]) ⇒ Boolean, msg: ⇒ Any): Prop[T]

    Implicit information
    This member is added by an implicit conversion from Prop[T] to Ensuring[Prop[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  11. def ensuring(cond: (Prop[T]) ⇒ Boolean): Prop[T]

    Implicit information
    This member is added by an implicit conversion from Prop[T] to Ensuring[Prop[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  12. def ensuring(cond: Boolean, msg: ⇒ Any): Prop[T]

    Implicit information
    This member is added by an implicit conversion from Prop[T] to Ensuring[Prop[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  13. def ensuring(cond: Boolean): Prop[T]

    Implicit information
    This member is added by an implicit conversion from Prop[T] to Ensuring[Prop[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  14. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  15. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  16. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  17. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit information
    This member is added by an implicit conversion from Prop[T] to StringFormat[Prop[T]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

  18. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  19. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  20. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  21. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  22. final def notify(): Unit

    Definition Classes
    AnyRef

  23. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  24. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  25. def toString(): String

    Definition Classes
    AnyRef → Any

  26. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  27. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  28. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  29. def →[B](y: B): (Prop[T], B)

    Implicit information
    This member is added by an implicit conversion from Prop[T] to ArrowAssoc[Prop[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion StringAdd from Prop[T] to StringAdd[Prop[T]]

Inherited by implicit conversion StringFormat from Prop[T] to StringFormat[Prop[T]]

Inherited by implicit conversion Ensuring from Prop[T] to Ensuring[Prop[T]]

Inherited by implicit conversion ArrowAssoc from Prop[T] to ArrowAssoc[Prop[T]]

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