Rate  copy   map    or    do slice  nada
copy  1372/s    --  -57%  -57%  -57%  -58%  -78%
map   3175/s  131%    --   -2%   -2%   -2%  -50%
or    3226/s  135%    2%    --    0%   -0%  -49%
do    3226/s  135%    2%    0%    --   -0%  -49%
slice 3236/s  136%    2%    0%    0%    --  -49%
nada  6289/s  358%   98%   95%   95%   94%    --