Exercise 14: Map Object Values
Problem Statement
Function `mapValues(obj, fn)` banao jo object ke sabhi values ko transform kare.
Example: mapValues({a: 1, b: 2}, x => x * 2) => {a: 2, b: 4}
Sample Output:
mapValues({a: 1, b: 2}, x => x * 2) => {a: 2, b: 4}
mapValues({x: "hello"}, s => s.toUpperCase()) => {x: "HELLO"}Solution
const mapValues = (obj, fn) => {
return Object.keys(obj).reduce((acc, key) => {
acc[key] = fn(obj[key], key);
return acc;
}, {});
};Explanation
Overall Goal:
- Object values ko transform function se modify karna.
Real world:
- Data transformation: value mapping.
- Calculations: value operations.