Prop

scala.sys.Prop
See theProp companion object
trait Prop[+T]

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.

Attributes

Companion:
object
Source:
Prop.scala
Graph
Supertypes
class Object
trait Matchable
class Any
Known subtypes

Members list

Concise view

Value members

Abstract methods

def clear(): Unit

Removes the property from the underlying map.

Removes the property from the underlying map.

Attributes

Source:
Prop.scala
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.

Attributes

Returns:

the current string value if any, else the empty string

Source:
Prop.scala

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.

Attributes

Returns:

whether the map contains the key

Source:
Prop.scala
def key: String

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

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

Attributes

Source:
Prop.scala
def option: Option[T]

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

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

Attributes

Source:
Prop.scala
def set(newValue: String): String

Sets the property.

Sets the property.

Attributes

newValue

the new string value

Returns:

the old value, or null if it was unset.

Source:
Prop.scala
def setValue[T1 >: T](value: T1): T

Sets the property with a value of the represented type.

Sets the property with a value of the represented type.

Attributes

Source:
Prop.scala
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.

Attributes

Returns:

the converted value, or zero if not in the map

Source:
Prop.scala