Run results for: Set vs some for arrays of objects

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.1.2

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Set	80929.3 Ops/sec
Some	454.0 Ops/sec

Script Preparation code:

var arr = new Array(1000).fill({ field1: Math.ceil(Math.random() * 1000) });
var arr2 = new Array(1000).fill({ field2: Math.ceil(Math.random() * 1000) });

Tests:

Set
const set = new Set(arr.map((el) => el.field1)); const result = arr2.filter(el => set.has(el.field2));
Some
const result = arr2.filter(el => arr.some((i) => el.field2 === i.field1));

Run results for: Set vs some for arrays of objects

Set

Some