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Run results for:
Array immutable union: underscore union vs vs uniq
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
8 months ago
Test name
Executions per second
underscore union
1807246.5 Ops/sec
object.assign
1362689.6 Ops/sec
underscore uniq spread
2229462.0 Ops/sec
HTML Preparation code:
<script src='https://cdn.jsdelivr.net/npm/underscore@1.12.1/underscore-min.js'></script>
Tests:
underscore union
var a = [ 'a', 'b', 'c' ]; var b = [ 'b', 'd', 'a', 'e', 'f' ]; var c = _.union(a, b);
object.assign
var a = [ 'a', 'b', 'c' ]; var b = [ 'b', 'd', 'a', 'e', 'f' ]; var c = Object.assign([], a, b);
underscore uniq spread
var a = [ 'a', 'b', 'c' ]; var b = [ 'b', 'd', 'a', 'e', 'f' ]; var c = _.uniq([...a, ...b]);