How can I merge two arrays and keep only unique values?

How can I merge two arrays and keep only unique values?

You can use the Set object in JavaScript to merge arrays and filter out duplicates. For example:

const array1 = [1, 2, 3];
const array2 = [2, 3, 4];
const mergedArray = [...new Set([...array1, ...array2])];
console.log(mergedArray); // Output: [1, 2, 3, 4]

What if I want to do this in Python?

In Python, you can use the set data structure to achieve the same result. Here's how:

array1 = [1, 2, 3]
array2 = [2, 3, 4]
merged_array = list(set(array1) | set(array2))
print(merged_array)  # Output: [1, 2, 3, 4]

Can I do this with more than two arrays?

Yes, you can merge multiple arrays by using the same approach. For example:

const arrays = [[1, 2], [2, 3], [3, 4]];
const mergedArray = [...new Set(arrays.flat())];
console.log(mergedArray); // Output: [1, 2, 3, 4]