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Run results for:
Array initialization: preallocate a typed array vs vanilla preallocation
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.2 Safari/605.1.15
Browser:
Safari 16
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Preallocate typed
177150.8 Ops/sec
Preallocate vanilla
87661.6 Ops/sec
Tests:
Preallocate typed
var N = 10000; var result = new Uint8Array(N); for (var i = 0; i < N; i++) { result[i] = i; }
Preallocate vanilla
var N = 10000; var result = new Array(N); for (var i = 0; i < N; i++) { result[i] = i; }