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Run results for:
Map read/write once vs twice (v2)
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36
Browser:
Yandex Browser 24
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Once
1512238.5 Ops/sec
Twice
955685.9 Ops/sec
Script Preparation code:
var keys = [1, 2, 3, 4]; var mapObject = new Map(); var mapTime = new Map(); var mapDate = new Map();
Tests:
Once
const date = Date.now(); keys.forEach((key, i) => { const time = i * 1000; mapObject.set(key, {time, date}); }); keys.forEach((key) => { const {time, date} = mapObject.get(key); });
Twice
const date = Date.now(); keys.forEach((key, i) => { const time = i * 1000; mapTime.set(key, time); mapDate.set(key, date); }); keys.forEach((key) => { mapTime.get(key); mapDate.get(key); });