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@DuncanMcArdle
Last active October 18, 2020 08:43
Map & set blog - Map overwrite
let contacts = new Map();
contacts.set('Duncan', '1234');
contacts.set('Duncan', '2345'); // Will overwrite
if (!contacts.has('Duncan')) {
contacts.set('Duncan', '3456'); // Won't be called
}
console.log(contacts); // Map { 'Duncan' => '2345' }
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