ended7월 23일· 1 sources
You've been doing Set math by hand. JavaScript finally shipped `.union()`, `.intersection()`, and friends.
Why it matters
You've written some version of this: const intersection = new Set([...setA].filter(x => setB.has(x))); const difference = new Set([...setA].filter(x => !setB.has(x))); const union = new Set([...setA, ...
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