How it is achieved is surely irrelevant (well almost).

Actually, it is absolutely relevant, because that is the core of my benchmark: comparing how fast grep, map, and ~~ process data. It is the generation of the data set that is irrelevant and probably can be replaced with BrowserUK's method, because it probably does not matter if what each of those functions process is unique, or not.

note: this posting spree has really helped me improve on my posting markups!