3 ms·

Premature optimization is. ..

• maximilianburke 11y ago
  a) The whole quote is "We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%" b) The quote isn't talking about data structuring/memory layout, but rather micro-optimizations of instruction sequences (removing goto statements, in the case of the original article)
• ansgri 11y ago
  .. is 50% chance to die by thousand paper cuts, 25% simply wasted time, AND 25% chance to avoid death by thousand paper cuts. At least in image processing and robotics, from my experience. It's very annoying when you have optimized all obvious hotspots 10x only to get 3x speedup because the remaining 30% code consistently abuses « simple ways », e.g. return big objects by value, use std::vector instead of proper Eigen arrays, constantly serialize objects everywhere, etc.