Benchmark: Persisting Set object vs recreating Set objects while maintaining a deduplicated ordered array

Script Preparation code:


// create an array of the numbers 1-1000, with each entry doubled, so:
// [1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, ... , 999, 999, 1000, 1000]

const doubledNumbers = [];
for (let i = 1; i <= 1000; i++) {
  doubledNumbers.push(i, i);
}

let dedupedAndSortedNumbers_1 = []
let dedupedAndSortedNumbers_2 = []

Tests:

Reusing Set objects Creating a new Set object every Iteration
for (const number of doubledNumbers) { const next = new Set(dedupedAndSortedNumbers_1); next.add(number); dedupedAndSortedNumbers_1 = Array.from(next).sort((a, b) => a - b); }
Reusing Set object
const set = new Set(dedupedAndSortedNumbers_2); for (const number of doubledNumbers) { set.add(number); dedupedAndSortedNumbers_2 = Array.from(set).sort((a, b) => a - b); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Reusing Set objects Creating a new Set object every Iteration
Reusing Set object

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Mac OS X 10.15.7

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Reusing Set object

48/s

Reusing Set objects Creating a new Set object every Iteration

18/s

View exact numbers

Test name	Executions per second
✓ Reusing Set object	48 Ops/sec
Reusing Set objects Creating a new Set object every Iteration	18 Ops/sec

Persisting Set object vs recreating Set objects while maintaining a deduplicated ordered array (version: 1)

Comparing performance of: `Reusing Set objects Creating a new Set object every Iteration vs Reusing Set object`

Created: one year ago by: Guest

Go to the latest result

Reusing Set objects Creating a new Set object every Iteration

Reusing Set object

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Persisting Set object vs recreating Set objects while maintaining a deduplicated ordered array (version: 1)

Comparing performance of: Reusing Set objects Creating a new Set object every Iteration vs Reusing Set object

Created: one year ago by: Guest

Go to the latest result

Reusing Set objects Creating a new Set object every Iteration

Reusing Set object

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Reusing Set objects Creating a new Set object every Iteration vs Reusing Set object`