Benchmark: Cloning arrays - MeasureThat.net

Script Preparation code:

var original = new Array(100);
for (let r = 0; r < 100; r++) {
  original[r] = [];
  for (let c = 0; c < 100; c++) {
    original[r][c] = r * 100 + c;
  }
}

Tests:

splice
var copy = new Array(original.length); for (let r = 0; r < original.length; r++) { copy[r] = original[r].splice(0); }
map
var copy = original.map(row => row.splice(0));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
splice
map

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Browser/OS: Chrome 140 on Mac OS X 10.15.7

View result in a separate tab

map

811K/s

splice

758K/s

View exact numbers

Test name	Executions per second
✓ map	810,520 Ops/sec
splice	757,761 Ops/sec

Cloning arrays (version: 0)

Comparing performance of: `splice vs map`

Created: 8 years ago by: Guest

Go to the latest result

splice

map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Cloning arrays (version: 0)

Comparing performance of: splice vs map

Created: 8 years ago by: Guest

Go to the latest result

splice

map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `splice vs map`