💾set.isEqualTo()

JS ⟩ value ⟩ object⟩ built-in ⟩ Set ⟩ extension ⟩ .isEqualTo()

💾 程式

• replit ⟩ Set Equality (old code)

// isEqualSets(a,b)
function isEqualSets(a, b){
    if (a.size !== b.size) return false;
    return Array.from(a).every(elem => b.has(elem));
}

// setA.equal(setB)
Set.prototype.equal = function(setB){
    return isEqualSets(this, setB);
}

• 👉 💈範例

📘 手冊

• array.every(), Array.from()

• Set

🗣 討論

• comparing ECMA6 sets for equality