Reduce and GroupBy
Apr 21, 2025 · 4 min read · Reduce https://playcode.io/2349265 type Person = { name: string; age: number; }; const people: Person[] = [ { name: "Kyle", age: 28 }, { name: "Sally", age: 45 }, { name: "John", age: 43 }, { name: "Sally", age: 28 }, ]; const grouped =...
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