Run results for: wrapped to original

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: 13 days ago

Test name	Executions per second
list	26068.3 Ops/sec
set	55635.6 Ops/sec

Script Preparation code:

function generateRecords(count) {
  const records = [];
  for (let i = 1; i <= count; i++) {
    // Генерация случайного original.id (от 1 до count/2 для появления дубликатов)
    const originalId = Math.floor(Math.random() * (count / 2)) + 1;
    records.push({ id: i, original: { id: originalId } });
  }
  return records;
}


function getUniqueRecords (records) {
  const seenIds = [];
  const uniqueRecords = [];

  for (const record of records) {
    if (!seenIds.includes(record.original.id)) {
      seenIds.push(record.original.id);
      uniqueRecords.push(record);
    }
  }

  return uniqueRecords;
}

function getUniqueRecordsSet(records) {
  const seenIds = new Set();
  const uniqueRecords = [];

  for (const record of records) {
    if (!seenIds.has(record.original.id)) {
      seenIds.add(record.original.id);
      uniqueRecords.push(record);
    }
  }

  return uniqueRecords;
}

var records = generateRecords(1000)

Tests:

list
getUniqueRecords(records)
set
getUniqueRecordsSet(records)

Run results for: wrapped to original

asd asdasd

list

set