Is it possible to add or remove elements in a map during the evacuation process?

In Go, during the evacuation process of map elements, it is not allowed to add or remove elements. Evacuation is an internal process during the map's resize, when elements are transferred from the old array to a new one. At this moment, any changes to the map's structure (adding or removing keys) can lead to data races and panics.

Therefore, it is recommended not to modify the map during its resize. Usually, this happens automatically and transparently to the user, but if you use a map in a concurrent environment, you need to synchronize access (for example, using a mutex) and avoid modifications during resize.