"Compiler optimizations" :)

Seriously, an optimizer's job is to anaylize code, realize that it is computationally equivilent to another peice of code, and then using the better version ("better" could be one or more of less processor time, RAM, space on disk, etc.).

I'm not sure if this is useful here or not, though.

"There is no shame in being self-taught, only in not trying to learn in the first place." -- Atrus, Myst: The Book of D'ni.

In reply to Re^2: Comparative satisfiability of regexps. by hardburn
in thread Comparative satisfiability of regexps. by Meowse

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