Common use cases of 'shallow copies'
Shallow copies are useful in scenarios where you need to create a new object with the same top-level properties as the original, but you don't need to deeply clone nested objects. Here are some common use cases: 1. **State Management in React**: When updating the state in React, you often create a shallow copy of the state object to ensure immutability. This allows React to detect changes and re-render components efficiently. ```javascript const newState = { ...oldState, newProperty: value }; ``` 2. **Merging Objects**: When you want to merge two or more objects, a shallow copy can be used to combine their properties. ```javascript const mergedObject = { ...object1, ...object2 }; ``` 3. **Cloning Simple Objects**: If you have an object with only primitive values (numbers, strings, booleans), a shallow copy is sufficient to create a new independent object. ```javascript const original ...