Benchmark: Exact string matching: RegExp vs Set

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); } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
RegExp
Set

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.96 YaBrowser/20.4.0.3443 Yowser/2.5 Safari/537.36

Browser/OS: Yandex Browser 20 on Mac OS X 10.14.6

View result in a separate tab

Test name	Executions per second
RegExp	9.7 Ops/sec
Set	12.0 Ops/sec

Exact string matching: RegExp vs Set (version: 0)

Comparing performance of: RegExp vs Set

Created: 4 years ago by: Guest

Jump to the latest result

RegExp

Set

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A