map-map_by_hand

Benchmark

mapByHand
Raw:
 > 22400.5994005994
 > 15882.117882117882
 > 21239.76023976024
 > 19094.905094905094
Average (mean) 19654.345654345656

mapp
Raw:
 > 6474.525474525474
 > 5877.122877122877
 > 6560.43956043956
 > 4529.470529470529
Average (mean) 5860.3896103896095

Winner: mapByHand
Compared with next highest (mapp), it's:
70.18% faster
3.35 times as fast
0.53 order(s) of magnitude faster
QUITE A BIT FASTER

Benchmark 2

map x 3,926,282 ops/sec ±7.06% (69 runs sampled)
mapByHand x 8,838,139 ops/sec ±13.21% (65 runs sampled)
Fastest is: mapByHand