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reference counting
<programming> A garbage collection technique where each
memory cell contains a count of the number of other cells
which point to it. If this count reaches zero the cell is
freed and its pointers to other cells are followed to
decrement their counts, and so on recursively.
This technique cannot cope with circular data structures.
Cells in such structures refer (indirectly) to themselves and
so will never have a zero reference count. This means they
would never be reclaimed, even when there are no references
from outside the structure.
(1995-02-22)
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Nearby terms:
REFAL « REF-ARF « reference « reference counting » referential integrity » referentially transparent » referential transparency
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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