Benchmark: Move element inside array (v3)

Script Preparation code:

const arr = []

for (let i = 1; i <= 100000; i++) {
  arr.push("element " + i)
}

function move1(from, to) {
  arr.splice(to, 0, arr.splice(from, 1)[0]);
}

function move2(from) {
  return [ arr[from], ...arr.filter((el, i) => i !== from) ]
}

function move3(from) {
  return [ ...arr.filter((el, i) => i !== from), arr[from] ]
}

function move4(from, to) {
  const testArr = arr.slice(0)
  testArr.splice(to, 0, testArr.splice(from, 1)[0])
  return testArr
}

Tests:

Universal move to start
for (let i = 1; i <= 1000; i++) { move1(4999, 0) }
Universal move to end
for (let i = 1; i <= 1000; i++) { move1(4999, 0) }
Move to start
for (let i = 1; i <= 1000; i++) { move2(4999) }
Move to end
for (let i = 1; i <= 1000; i++) { move3(4999) }
Universal move to start (new array)
for (let i = 1; i <= 1000; i++) { move4(4999, 0) }
Universal move to end (new array)
for (let i = 1; i <= 1000; i++) { move4(4999, 100000 - 1) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Universal move to start
Universal move to end
Move to start
Move to end
Universal move to start (new array)
Universal move to end (new array)

Fastest: N/A

Slowest: N/A

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Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36

Browser/OS: Chrome 101 on Windows

View result in a separate tab

Test name	Executions per second
Universal move to start	3.9 Ops/sec
Universal move to end	4.7 Ops/sec
Move to start	0.7 Ops/sec
Move to end	0.7 Ops/sec
Universal move to start (new array)	6.7 Ops/sec
Universal move to end (new array)	7.2 Ops/sec

Move element inside array (v3) (version: 2)

Comparing performance of: Universal move to start vs Universal move to end vs Move to start vs Move to end vs Universal move to start (new array) vs Universal move to end (new array)

Created: one year ago by: Registered User

Jump to the latest result

Universal move to start

Universal move to end

Move to start

Move to end

Universal move to start (new array)

Universal move to end (new array)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A