How is the Map data structure implemented?

In Go, the data structure Map is implemented as a hash table that provides fast access to values by key.

Implementation features:

• Keys are hashed to determine the index in the bucket array.
• Each bucket contains multiple key-value pairs to resolve collisions.
• When adding or removing elements, the structure may be reallocated to maintain performance.

Example of using map in Go:

package main
import "fmt"

func main() {
    m := make(map[string]int)
    m["apple"] = 5
    m["banana"] = 3
    fmt.Println(m["apple"]) // Will output 5
}

Thus, map in Go provides efficient storage and retrieval of data by key.