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Jan 18th, 2018
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  1. package loops_test
  2.  
  3. import (
  4. "testing"
  5. )
  6.  
  7. var totalPkg byte
  8.  
  9. func BenchmarkForRangeArray(b *testing.B) {
  10. var arr [128 * 1024]byte
  11. var total byte
  12.  
  13. for n := 0; n < b.N; n++ {
  14. for _, v := range arr {
  15. total += v
  16. }
  17. }
  18. totalPkg = total
  19. }
  20.  
  21. func BenchmarkForRangeSlice(b *testing.B) {
  22. var arr [128 * 1024]byte
  23. var total byte
  24.  
  25. for n := 0; n < b.N; n++ {
  26. for _, v := range arr[:] {
  27. total += v
  28. }
  29. }
  30. totalPkg = total
  31. }
  32.  
  33. func BenchmarkClassicFor(b *testing.B) {
  34. var arr [128 * 1024]byte
  35. var total byte
  36.  
  37. for n := 0; n < b.N; n++ {
  38. for i := 0; i < len(arr); i++ {
  39. total += arr[i]
  40. }
  41. }
  42. totalPkg = total
  43. }
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