A lightweight interface wrapping a property contained in some unspecified map.
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.
- Companion
- object
Value members
Abstract methods
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
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
The full name of the property, e.g., "java.awt.headless".
The full name of the property, e.g., "java.awt.headless".
Some(value) if the property is set, None otherwise.
Some(value) if the property is set, None otherwise.
Sets the property.
Sets the property.
- Value Params
- newValue
the new string value
- Returns
the old value, or null if it was unset.
Sets the property with a value of the represented type.
Sets the property with a value of the represented type.
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
zeroif not in the map