Gareth Rees 2cf1861e8d Improvements to clarity of weak hash table implementation: ... * TAG_SIZE was changed to TAG_COUNT in the code, so make the corresponding change in the manual. * Avoid the "+= 2" hack: use TAG_COUNT(UNTAG_COUNT(...) + 1). Clarity is more important than speed here. * Use obj_unused for unused hash table entries so that there can be no confusion between NULL meaning "unused" and NULL meaning "splatted by the garbage collector". * Add references from the example code to the notes. Copied from Perforce Change: 182804 ServerID: perforce.ravenbrook.com		2013-06-19 12:59:49 +01:00
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scheme	Improvements to clarity of weak hash table implementation:	2013-06-19 12:59:49 +01:00