How do I avoid 'concurrent map writes' errors in Go?

In Go, the "concurrent map writes" error occurs when multiple goroutines simultaneously write to a map without proper synchronization. To avoid this issue, we can use synchronization mechanisms such as mutexes or channels. Below is an example using a mutex to safely write to a map from multiple goroutines.


        package main
        
        import (
            "fmt"
            "sync"
        )

        func main() {
            var mu sync.Mutex
            myMap := make(map[int]int)

            var wg sync.WaitGroup

            for i := 0; i < 10; i++ {
                wg.Add(1)
                go func(i int) {
                    defer wg.Done()
                    mu.Lock()
                    myMap[i] = i * i // Safe write to the map
                    mu.Unlock()
                }(i)
            }

            wg.Wait()
            fmt.Println(myMap) // Print the map after all goroutines finish
        }

How do I avoid 'concurrent map writes' errors in Go?

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How do I avoid 'concurrent map writes' errors in Go?

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