Optional Class |
(14.1.1.0)
E55634-01
.NET port of java.util.Optional, a container object which may or may not contain
a non-null value. If a value is present, IsPresent() will return true and Get()
will return the value.
Inheritance HierarchyNamespace: Tangosol.Util
Assembly: Coherence (in Coherence.dll) Version: 14.1.1.1 (14.1.1.1)
SyntaxC#
public class Optional : IPortableObject
The Optional type exposes the following members.
ConstructorsProperties| Name | Description | |
|---|---|---|
 | IsPresent |
Whether there is a value present.
|
| Value |
The value of the Optional object; can be null.
|
Methods| Name | Description | |
|---|---|---|
  | Empty |
Returns a Optional instance with null object value.
|
| Equals |
Compares this object with another object for equality.
(Overrides ObjectEquals(Object).) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode |
Returns a hash code value for this object.
(Overrides ObjectGetHashCode.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| Of |
Returns an Optional instance with the given object value.
|
| OfNullable |
Returns an Optional describing the specified value, if non-null,
otherwise returns an empty Optional.
|
| OrElse |
Returns value if present, otherwise, return the given object.
|
| ReadExternal |
Restore the contents of a user type instance by reading its state
using the specified IPofReader object.
|
| ToString |
Returns a non-empty string representation of this Optional suitable
for debugging. The exact presentation format is unspecified and may
vary between implementations and versions.
(Overrides ObjectToString.) |
| WriteExternal |
Save the contents of a POF user type instance by writing its
state using the specified IPofWriter object.
|
See Also