ok 1 - Control matched.
ok 2 - Control matched.
ok 3 - Control matched.
              Rate NestedLoops      mapped     foreach      sliced
NestedLoops 5.17/s          --        -89%        -91%        -95%
mapped      49.0/s        848%          --        -19%        -49%
foreach     60.2/s       1065%         23%          --        -37%
sliced      96.2/s       1760%         96%         60%          --
1..3