class WeakReference

Public Methods

•  WeakReference ()
•  WeakReference (const WeakReference<SmartWrapper>& source)
•  WeakReference (SmartWrapper& source)
• inline WeakReference<SmartWrapper>&  operator= (const WeakReference<SmartWrapper>& source)
• virtual  ~WeakReference ()
• void  release ()
• inline operator  SmartWrapper () const

Detailed Description

The WeakReference class can be used to savely store an object, without disallowing that it gets destroyed. A typical situation where you may want to use this is when you implement a datastructure, where A refers B, and B refers A. Using "normal" references, this structure would never get freed.

Usage example:

Synth_WAVE_SIN sin; WeakReference<Synth_PLAY_WAV> weak_sin;

{ Synth_WAVE_SIN test = weak_sin; if(test.isNull()) printf("#1 missing object\n"); else test.start(); }

// now, the strong reference leaves sin = Synth_WAVE_SIN::null();

{ Synth_WAVE_SIN test = weak_sin; if(test.isNull()) printf("#2 missing object\n"); else test.stop();

This would output "#2 missing object".

[virtual]

Reimplemented from WeakReferenceBase.

[const]