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Run results for:
Exact string matching: RegExp vs Set
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0
Browser:
Firefox 149
Operating system:
Linux
Device Platform:
Desktop
Date tested:
26 days ago
Test name
Executions per second
RegExp
41.9 Ops/sec
Set
153.3 Ops/sec
Script Preparation code:
var count = 100000; var isoCodes = [ 'AUD', 'CAD', 'USD', 'GBP', 'EUR', 'SGD' ]; var isoCodesPattern = new RegExp('^\\b(' + isoCodes.join('|') + ')\\b$'); var isoCodeSet = new Set(isoCodes); var isoCodesToTest = isoCodes.concat( 'JPY', 'HKD', 'NZD' ).sort();
Tests:
RegExp
for (let i = 0; i < count; i++) { for (const isoCode of isoCodesToTest) { isoCodesPattern.test(isoCode); } }
Set
for (let i = 0; i < count; i++) { for (const isoCode of isoCodesToTest) { isoCodeSet.has(isoCode); } }