Bruce Momjian wrote:
Gaetano Mendola wrote:
I don't think the article is available online, alas, but you can find some related source code demonstrating the technique at:
http://www.semantics.org/tyr/tyr0_5/list.h
That certainly is an amazing idea. You know the pointer you are coming from so you can XOR to find the next pointer.
I agree with a Tom that we don't have much use for double-link lists,
but is a nice idea.
I must confess that it strikes me as a really really horrid and ugly hack - very likely to be error-prone and non-portable and undebuggable, and for almost no saving worth having. But maybe that's just me.
In general I've been impressed with the quality of Pg code over the last 6 months or so - I'd hate to see it polluted by something like this.
cheers
andrew
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