Run results for: parse list of bytes

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36 Edg/93.0.961.38

Browser: Chrome 93

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
split	3457.1 Ops/sec
split no init size	3285.0 Ops/sec
byte array	3419.7 Ops/sec
json nonsense	39145.7 Ops/sec

Script Preparation code:

function makeString() {
  return Array.from(Array(1000))
    .map(() => (Math.random() * 256) | 0)
    .join(",");
}

var str = makeString();
window.output=null;

Tests:

split
const uintStrings = str.split(","); const len = uintStrings.length; const uintArray = new Array(len); for (let i = 0; i < len; ++i) { uintArray[i] = parseInt(uintStrings[i]); } window.output= uintArray;
split no init size
const uintStrings = str.split(","); const len = uintStrings.length; const uintArray = new Array(); for (let i = 0; i < len; ++i) { uintArray[i] = parseInt(uintStrings[i]); } window.output=uintArray;
byte array
const uintStrings = str.split(","); const len = uintStrings.length; const uintArray = new Uint8Array(len); for (let i = 0; i < len; ++i) { uintArray[i] = parseInt(uintStrings[i]); } window.output=uintArray;
json nonsense
window.output=JSON.parse(`[${str}]`);

Run results for: parse list of bytes

split

split no init size

byte array

json nonsense