Kas on võimalik kirjutada ühte kaarti korraga erinevatest gorutinidest? Mis juhtub?

In Go, it is not safe to write to the same map from different goroutines simultaneously without additional synchronization. The standard map is not thread-safe, and concurrent write operations can lead to a panic (runtime panic) or data corruption.

To safely use a map in a concurrent environment, you can:

• Use sync.Mutex or sync.RWMutex to protect access to the map.
• Use sync.Map, a specialized and thread-safe data structure for maps.

Example with mutex:

var (
    m = make(map[string]int)
    mu sync.Mutex
)

func write(key string, value int) {
    mu.Lock()
    m[key] = value
    mu.Unlock()
}

Without such protection, the program may unexpectedly crash.