Create go-routine-map.go

Go/Map/go-routine-map.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+)
+
+// saveToMap saves a key-value pair into the provided sync.Map
+func saveToMap(safeMap *sync.Map, key string, value interface{}) {
+	// Store the key-value pair in the given map
+	safeMap.Store(key, value)
+}
+
+// retrieveFromMap retrieves a value from the provided sync.Map for a given key.
+// If the key does not exist, it returns nil.
+func retrieveFromMap(safeMap *sync.Map, key string) interface{} {
+	// Load fetches the value for the key; if the key doesn't exist, it returns nil
+	value, _ := safeMap.Load(key)
+	return value
+}
+
+func main() {
+	// Create multiple sync.Map instances
+	var map1 sync.Map
+	var map2 sync.Map
+
+	// Save key-value pairs into the first map (map1)
+	saveToMap(&map1, "name", "John Doe")
+	saveToMap(&map1, "age", 30)
+
+	// Save key-value pairs into the second map (map2)
+	saveToMap(&map2, "city", "New York")
+	saveToMap(&map2, "country", "USA")
+
+	// Retrieve values from map1
+	value := retrieveFromMap(&map1, "name")
+	if value == nil {
+		fmt.Println("Map1 - Name not found")
+	} else {
+		fmt.Println("Map1 - Name:", value)
+	}
+
+	value = retrieveFromMap(&map1, "age")
+	if value == nil {
+		fmt.Println("Map1 - Age not found")
+	} else {
+		fmt.Println("Map1 - Age:", value)
+	}
+
+	// Retrieve values from map2
+	value = retrieveFromMap(&map2, "city")
+	if value == nil {
+		fmt.Println("Map2 - City not found")
+	} else {
+		fmt.Println("Map2 - City:", value)
+	}
+
+	value = retrieveFromMap(&map2, "country")
+	if value == nil {
+		fmt.Println("Map2 - Country not found")
+	} else {
+		fmt.Println("Map2 - Country:", value)
+	}
+
+	// Attempt to retrieve a non-existent key
+	value = retrieveFromMap(&map2, "continent")
+	if value == nil {
+		fmt.Println("Map2 - Continent not found")
+	} else {
+		fmt.Println("Map2 - Continent:", value)
+	}
+}