17 lines
731 B
Org Mode
17 lines
731 B
Org Mode
* Guile Weak References
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This is a simple little library that makes use of the weak vector functionality in core Guile
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to implement weak references, objects which weakly point to other objects.
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The interface is very simple:
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(make-weakref obj)
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- Create a weak reference, which will not count as a reference, so the object can be garbage collected
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(weakref-object ref)
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- Get the object associated with the reference, or #f if it has been garbage collected.
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** Implementation
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This is a very simple implementation (thanks David Thompson for a simpler idea). It simply calls a single-
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element weak vector a weak reference. Initially this used the weak hash table support but using a weak
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vector is far simpler and uses less memory.
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