abhi9u@lemmy.world to Technology@lemmy.worldEnglish · 12 天前Python Performance: Why 'if not list' is 2x Faster Than Using len()blog.codingconfessions.comexternal-linkmessage-square148fedilinkarrow-up1218cross-posted to: python@programming.dev
arrow-up1218external-linkPython Performance: Why 'if not list' is 2x Faster Than Using len()blog.codingconfessions.comabhi9u@lemmy.world to Technology@lemmy.worldEnglish · 12 天前message-square148fedilinkcross-posted to: python@programming.dev
minus-squareuis@lemm.eelinkfedilinkEnglisharrow-up16·12 天前There are decades of articles on c++ optimizations, that say “use empty() instead of size()”, which is same as here.
minus-squaredreugeworst@lemmy.mllinkfedilinkEnglisharrow-up5·11 天前except for c++ it was just to avoid a single function call, not extra indirection. also on modern compilers size() will get inlined and ultimate instructions generated by the compiler will likely be the same
There are decades of articles on c++ optimizations, that say “use empty() instead of size()”, which is same as here.
except for c++ it was just to avoid a single function call, not extra indirection. also on modern compilers size() will get inlined and ultimate instructions generated by the compiler will likely be the same