Use objects and Maps for O(1) key-value lookups. Sets prevent duplicates. Hash maps are crucial for caching and deduplication.
const map = new Map();
map.set('name', 'Alice');
map.set('age', 30);
console.log(map.get('name'));
console.log(map.has('age'));
// ...Use objects and Maps for O(1) key-value lookups. Sets prevent duplicates. Hash maps are crucial for caching and deduplication.
const map = new Map();
map.set('name', 'Alice');
map.set('age', 30);
console.log(map.get('name'));
console.log(map.has('age'));
// ...