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RefCount - Count of active Object pointers

Description:
This attribute gives the number of active pointers associated with an Object. It is modified whenever pointers are created or annulled (by astClone, astAnnul or astEnd for example). The count includes the initial pointer issued when the Object was created.

If the reference count for an Object falls to zero as the result of annulling a pointer to it, then the Object will be deleted.

Type:
Integer, read-only.
Class Applicability:
Object
All Objects have this attribute.


next up previous 264
Next: RefDec - The declination of the reference point
Up: AST Attribute Descriptions
Previous: Projection - Sky projection description

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council