Result of running these benchmarks on Chrome 45.0.2454.101
These numbers seem to be pretty consistent on Blink-based browsers (Chrome and Opera) but are more like 20% to 50% improvements on FireFox, Safari, and IE. I am not sure how to explain that, so take these numbers more as an indicator of “Elm is generating faster code across the board” as opposed to “Elm is 10x faster!”
benchmark
0.15.1 ops/sec
0.16 ops/sec
comparison
toggle boxes - 7 actions
28,277
263,424
9.32
benchmark
0.15.1 ops/sec
0.16 ops/sec
comparison
type in 5 tasks - 80 actions
2,152
18,573
8.63
do everything - 269 actions
382
1,101
2.88
benchmark
0.15.1 ops/sec
0.16 ops/sec
comparison
Maybe.withDefault 0 (Just 42)
11,090,226
41,723,518
3.76
Maybe.withDefault 0 Nothing
11,592,266
44,721,889
3.86
isBlack Diamond
11,577,379
35,718,600
3.09
evaluate basicBoolean
3,841,394
17,689,892
4.61
evaluate fancyBoolean
1,999,006
11,576,469
5.71
benchmark
0.15.1 ops/sec
0.16 ops/sec
comparison
bind numbers, add them
17,098,659
75,893,573
4.44
tuple destructuring
327,967
73,194,881
223.18
record destructuring
251,713
72,069,854
286.32
benchmark
0.15.1 ops/sec
0.16 ops/sec
comparison
1 of 2 fields
189,967
2,970,974
15.64
2 of 2 fields
116,983
2,699,606
23.08
2 of 2 new
361,041
30,316,190
83.97
3 of 5 fields
355,494
1,214,059
3.42
5 of 5 fields
94,264
1,213,257
12.87
5 of 5 new
260,526
28,545,331
109.57
benchmark
0.15.1 ops/sec
0.16 ops/sec
comparison
2 of 2
17,003,678
42,816,182
2.52
4 of 10
14,723,307
33,334,457
2.26
holy moly!