How to find the number of key-value pairs in a map in Go?

In Go, you can find the number of key-value pairs in a map using the len() function. Here's an example:

package main

import "fmt"

func main() {
    // Create a map
    m := map[string]int{
        "apple":  5,
        "banana": 3,
        "orange": 7,
    }

    // Get the number of key-value pairs in the map
    count := len(m)

    fmt.Println("Number of key-value pairs:", count)
}

Output:

Number of key-value pairs: 3

In the above example, the len() function is used to get the number of key-value pairs in the map m. The result is then printed using fmt.Println().