Class AbsentValue

Represents a special value that signifies the absence of any entity/state/value/data. The instances may be stored in a cache to indicate that the key exists, but points to a non-existing "absent" entity. This is useful for DB lookups, not to touch the backend for values that don't exist. Use AbsentValue.Instance singleton

Inheritance
System.Object
AbsentValue
Inherited Members
System.Object.Equals(System.Object, System.Object)
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: Azos.Data
Assembly: Azos.dll
Syntax
[Serializable]
public sealed class AbsentValue

Fields

Instance

Declaration
public static readonly AbsentValue Instance
Field Value
Type Description
AbsentValue

Methods

Equals(Object)

Declaration
public override bool Equals(object obj)
Parameters
Type Name Description
System.Object obj
Returns
Type Description
System.Boolean
Overrides
System.Object.Equals(System.Object)

GetHashCode()

Declaration
public override int GetHashCode()
Returns
Type Description
System.Int32
Overrides
System.Object.GetHashCode()

ToString()

Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides
System.Object.ToString()

Extension Methods