This benchmark compares compilation time of class with N method vs. time to compile class and N single-method extensions in Swift.
rake benchmark
On my machine it produces the following results:
| n | methods | extensions |
|---|---|---|
| 100 | 0,15 | 0,15 |
| 1000 | 1,05 | 1,1067 |
| 2000 | 2,0933 | 2,4467 |
| 3000 | 3,2867 | 4,2 |
| 5000 | 6,033 | 8,6367 |
| 10000 | 17,4767 | 33,21 |