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Run results for:
Binary to boolean with DataView: readUint8() with for loop vs. slice() with map()
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<iframe src="https://measurethat.net/Embed?id=538524" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Browser:
Chrome 127
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Slice with map
437K/s
readUint8 with for loop
7K/s
View exact numbers
Test name
Executions per second
✓
Slice with map
436,898 Ops/sec
readUint8 with for loop
7,269 Ops/sec
Tests:
readUint8 with for loop
const length = 1000; const arrayBuffer = new ArrayBuffer(length); const array = new Uint8Array(arrayBuffer); for (let i = 0; i < length; i++) { array[i] = 22; } const dataView = new DataView(arrayBuffer); const resultArray = []; for (let i = 0; i < length; i++) { const value = dataView.getUint8(i); resultArray.push(Boolean(value)); }
Slice with map
const length = 1000; const arrayBuffer = new ArrayBuffer(length); const array = new Uint8Array(arrayBuffer); for (let i = 0; i < length; i++) { array[i] = 22; } const dataView = new DataView(arrayBuffer); const transferArray = new Uint8Array(dataView); const resultArray = [...transferArray].map(value => Boolean(value));