class ElemNull An element representing nothing. Null. More...

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Public Methods

•  ElemNull ()
•  ElemNull (const char* )
• string  str () const
• const char*  type () const

Public Members

• static const char* id
• static Hash _hash

Detailed Description

This is used by VarRW when an element being read is not available. For example, if the route is IPv4, but the IPv6 representation is being asked for.

The dispatcher also treats Null arguments as a special case by returning a Null.

[const]

Reimplemented from Element.

[const]

Reimplemented from Element.