>> http://linuxjunk.blogspot.com/2009/11/are-templates-faster-than-subclasses.html > I didn't see the first version. In the current version, the templated > code is simple enough that the optimizer can figure out the whole thing > and skip everything. The virtual code is not simple enough, so the code > actually executes. Ah ok, so it's able to optimise my loop in to a single multiply here? That's neat. > So you still aren't measuring what you set out to measure. I've constructed a slightly more complicated test: http://linuxjunk.blogspot.com/2009/11/templates-v-subclasses-v2.html In this case the templated version doesn't seem to have the same huge advantage. Templated 20.73s against 21.1s for the classed version. I would guess real, but not huge. Do these numbers seem reasonable? Nav
