Re^3: Challenge: CPU-optimized byte-wise or-equals (for a meter of beer)

On the "other" test set, my approach fares far more within my expectations, but here the number of elements returned seems to become significant over the number of string joins:

                           Rate split1 substr1 map_split subst map_spl
+it_join using_str_bit_ops_and_tr
split1                   1.74/s     --    -94%     -100% -100%        
+  -100%                 -100%
substr1                  30.5/s  1650%      --      -93%  -94%        
+   -94%                  -96%
map_split                 455/s 26002%   1392%        --  -13%        
+   -15%                  -34%
subst                     520/s 29765%   1607%       14%    --        
+    -3%                  -25%
map_split_join            534/s 30577%   1653%       18%    3%        
+     --                  -23%
using_str_bit_ops_and_tr  692/s 39604%   2169%       52%   33%        
+    29%                    --
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So, you will need to always benchmark with real data! ;)

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