Implement equality for Values #126
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: apelisse The full list of commands accepted by this bot can be found here. The pull request process is described here
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Equality doesn't require the same amount of sophistication than ordering comparison. Implement an Equal function that does just that but does it much faster. Benchmark results show up to 96% improvement: ``` benchmark old ns/op new ns/op delta BenchmarkDeducedSimple-12 110083 103256 -6.20% BenchmarkDeducedNested-12 374366 374160 -0.06% BenchmarkDeducedNestedAcrossVersion-12 392864 405525 +3.22% BenchmarkLeafConflictAcrossVersion-12 89112 89070 -0.05% BenchmarkMultipleApplierRecursiveRealConversion-12 1564330 1574620 +0.66% BenchmarkOperations/Pod/Create-12 103693 103970 +0.27% BenchmarkOperations/Pod/Apply-12 291760 291317 -0.15% BenchmarkOperations/Pod/Update-12 193419 190470 -1.52% BenchmarkOperations/Pod/UpdateVersion-12 261692 251966 -3.72% BenchmarkOperations/Node/Create-12 152047 155710 +2.41% BenchmarkOperations/Node/Apply-12 499187 473901 -5.07% BenchmarkOperations/Node/Update-12 299271 279142 -6.73% BenchmarkOperations/Node/UpdateVersion-12 438723 403125 -8.11% BenchmarkOperations/Endpoints/Create-12 12246 11940 -2.50% BenchmarkOperations/Endpoints/Apply-12 915806 924080 +0.90% BenchmarkOperations/Endpoints/Update-12 7155675 285092 -96.02% BenchmarkOperations/Endpoints/UpdateVersion-12 14278150 544040 -96.19% BenchmarkOperations/CustomResourceDefinition/Create-12 1312734 1288472 -1.85% BenchmarkOperations/CustomResourceDefinition/Apply-12 3346591 3376864 +0.90% BenchmarkOperations/CustomResourceDefinition/Update-12 10681243 1758764 -83.53% BenchmarkOperations/CustomResourceDefinition/UpdateVersion-12 19069925 2202330 -88.45% ```
The current Less implementation has an exponential complexity. Replacing Less with a Compare method avoids that problem.
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| // LHS is less; return | ||
| return true | ||
| } | ||
| if fb.Value.Less(fa.Value) { |
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Can't believe I did this... whoops
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/lgtm Great |
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Cherrypick #126 to 1.0 - Implement equality for Values
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Equality doesn't require the same amount of sophistication than ordering
comparison. Implement an Equal function that does just that but does it
much faster.
Benchmark results show up to 96% improvement: