Benchmark: Is String Set be faster than many equal?

Script Preparation code:

var fullList = new Array(9000).fill(0).map((e,i)=>`${i}::${crypto.randomUUID()}`);
var k01 = new Array(9000).fill(0).map((e,i)=>Math.random()>0.5);
var k02 = new Array(9000).fill(0).map((e,i)=>Math.random()>0.5);
var s01 = fullList.map((e,i)=>k01[i]?e:null).filter(e=>e);
var s02 = fullList.map((e,i)=>k02[i]?e:null).filter(e=>e);
var f01 = new Function('key', s01.map(e=>`if(key==='${e}')return true;`).join('\n')+'return false;');
var f02 = new Function('key','s', `if(s.has(key))return true;`+'return false;');
var st = new Set(s01);


var test01 = function(){
  const main = s01;
  const loop = s02;
  let result = 0;
  let ui = 0;
  for(let s of loop){
    ui++;
    if(f01(s))continue;
    result += ui;
  }
  return result;
}

var test02 = function(){
  const main = s01;
  const loop = s02;
  let result = 0;
  let ui = 0;
  for(let s of loop){
    ui++;
    if(f02(s, st))continue;
    result += ui;
  }
  return result;
}

console.log('test01',test01());
console.log('test02',test02());

Tests:

Without Set
test01();
With Set
test02();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Without Set
With Set

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 23 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.2 Safari/605.1.15

Browser/OS: Safari 16 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Without Set	6.8 Ops/sec
With Set	2912.1 Ops/sec

Is String Set be faster than many equal? (version: 0)

Comparing performance of: Without Set vs With Set

Created: 23 days ago by: Guest

Jump to the latest result

Without Set

With Set

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A