How is the situation of hash value collision handled when adding elements to a Map data structure?

In Go, the data structure map is implemented as a hash table. When adding an element, the key is hashed, and the value is placed into the corresponding bucket.

If hash collisions occur, Go uses chaining within the bucket: multiple key-value pairs are stored in one bucket.

When searching or adding, Go iterates through the elements in the bucket and compares keys using a comparison function. If the key already exists, the value is updated; if not, a new pair is added.

Thus, collision handling occurs automatically and transparently for the developer, ensuring the correct operation of map even in case of hash collisions.