Run results for: Simple Regex 3

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.3 Safari/605.1.15

Browser: Safari 14

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
String handling	1696873.0 Ops/sec
Simple Regex	1128601.0 Ops/sec
Anchored Regex	1140384.0 Ops/sec

Script Preparation code:

const urls = [
"/v1/tron/instruments/PVCM/composition",
"/v1/tron/instruments/Otro/composition",
"/v1/tron/instruments/Serabe/composition",
"/v1/tron/instruments/PVCM/compositon",
];

const results = ['PVCM', 'Otro', 'Serabe', false];

Tests:

String handling
const urls = [ "/v1/tron/instruments/PVCM/composition", "/v1/tron/instruments/Otro/composition", "/v1/tron/instruments/Serabe/composition", "/v1/tron/instruments/PVCM/compositon", ]; const results = ['PVCM', 'Otro', 'Serabe', false]; const extractSegment = (url) => { if (!url.startsWith('/v1/tron/instruments/')) { return false; } if (!url.endsWith('/composition')) { return false; } const fragment = url.substring('/v1/tron/instruments/'.length, url.length - '/composition'.length); if (fragment.includes('/')) { return false; } return fragment; } urls.forEach((url, idx) => { const fragment = extractSegment(url); if (fragment !== results[idx]) { throw `Mismatch #{fragment} #{results[idx]}`; } });
Simple Regex
const urls = [ "/v1/tron/instruments/PVCM/composition", "/v1/tron/instruments/Otro/composition", "/v1/tron/instruments/Serabe/composition", "/v1/tron/instruments/PVCM/compositon", ]; const results = ['PVCM', 'Otro', 'Serabe', false]; const regexp = new RegExp('\/v1\/tron\/instruments\/([^/]+)\/composition', "i") urls.forEach((url, idx) => { const match = url.match(regexp); if (typeof results[idx] === 'string') { if (match[1] !== results[idx]) { throw `Wrong #{match[1]} #{results[idx]}`; } } else if (results[idx] === false) { if (match !== null) { throw `Wrong, #{match} found`; } } });
Anchored Regex
const urls = [ "/v1/tron/instruments/PVCM/composition", "/v1/tron/instruments/Otro/composition", "/v1/tron/instruments/Serabe/composition", "/v1/tron/instruments/PVCM/compositon", ]; const results = ['PVCM', 'Otro', 'Serabe', false]; const regexp = new RegExp('^\/v1\/tron\/instruments\/([^/]+)\/composition$', "i") urls.forEach((url, idx) => { const match = url.match(regexp); if (typeof results[idx] === 'string') { if (match[1] !== results[idx]) { throw `Wrong #{match[1]} #{results[idx]}`; } } else if (results[idx] === false) { if (match !== null) { throw `Wrong, #{match} found`; } } });

Run results for: Simple Regex 3

String handling

Simple Regex

Anchored Regex