The following benchmarks indicate a performance improvement for bulk object creation.
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Update 20230119: Ex Nihilo wins in jsbench.me tests on Chrome 109 and Firefox 109:
Older benchmarks follow for archival reference:
A
benchmark.js test running on node.js:
________________________________________________________ Research>node --version v10.16.3 Research>node bench.js OldStyleClass x 165,772 ops/sec ±0.38% (106 runs sampled) Ex Nihilo x 180,305 ops/sec ±0.50% (104 runs sampled) Fastest is Ex Nihilo Research>node bench.js NewStyleClass x 163,242 ops/sec ±0.28% (111 runs sampled) Ex Nihilo x 180,219 ops/sec ±0.46% (100 runs sampled) Fastest is Ex Nihilo Research>node bench.js OldStyleClass x 160,930 ops/sec ±0.58% (103 runs sampled) NewStyleClass x 161,634 ops/sec ±0.79% (105 runs sampled) Ex Nihilo x 176,387 ops/sec ±0.44% (107 runs sampled) Fastest is Ex Nihilo
Older runs on jsperf.com:
Update 20200627: None of the newer versions of the browsers run Ex Nihilo faster. Optimization wins!
Update 20201006: Additional server-side tests:
________________________________________________________ Research>node --version v12.19.0 Research>node bench.js OldStyleClass x 153,207 ops/sec ±0.95% (84 runs sampled) NewStyleClass x 150,535 ops/sec ±0.32% (93 runs sampled) Ex Nihilo x 166,850 ops/sec ±1.84% (91 runs sampled) Fastest is Ex Nihilo ________________________________________________________ Research>node --version v13.14.0 Research>node bench.js OldStyleClass x 151,339 ops/sec ±0.76% (86 runs sampled) NewStyleClass x 147,369 ops/sec ±0.27% (95 runs sampled) Ex Nihilo x 164,624 ops/sec ±0.26% (93 runs sampled) Fastest is Ex Nihilo ________________________________________________________ Research>node --version v14.13.0 Research>node bench.js OldStyleClass x 147,954 ops/sec ±1.03% (87 runs sampled) NewStyleClass x 144,716 ops/sec ±0.37% (93 runs sampled) Ex Nihilo x 160,388 ops/sec ±0.47% (89 runs sampled) Fastest is Ex Nihilo
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