> (in an environment where efficiency was paramount), Writing Efficient Programs was gold. I still have it, and I'm glad that to see that it's still valued. In

> (in an environment where efficiency was paramount), Writing Efficient Programs was gold. I still have it, and I'm glad that to see that it's still valued. Interesting to know, and agreed. The book even has a list of thumb rules for the various kinds of optimizations it describes, with guidelines on when each one is appropriate to use or not (as you would know, having read it). Great writing throughout, too. Loop unrolling (for both fixed- and variable-length loops) was one among the many cool ones.