func make ([] type, size, capacity)

//Golang program to add items into the hash collection
package main

//import fmt package
import "fmt"  

//Main function to execute the program
func main() {

   // create an empty map to hold key-value pairs
   hashmap := make(map[string]int)

   // add key-value pairs to the map
   hashmap["pencil"] = 10
   hashmap["pen"] = 20
   hashmap["scale"] = 15

   // print the map to see its contents
   fmt.Println("The map after values are added in it is presented as follows:")
   fmt.Println(hashmap)
}

The map after values are added in it is presented as follows:
map[pen:20 pencil:10 scale:15]

//Golang program to add items into the hash collection
package main

//import fmt package
import "fmt"   

//Main function to execute the program
func main() {

   // create an empty map using the make() function
   hashmap := make(map[string]int)

   // create a slice of key-value pairs to add to the map
   keyvaluepairs := []struct {
      key   string
      value int
   }{
      {"pencil", 10},
      {"pen", 20},
      {"scale", 15},
   }

   // loop over the slice and add the key-value pairs to the map
   for _, pair := range keyvaluepairs {
      hashmap[pair.key] = pair.value
   }

   // print the map to see its contents
   fmt.Println("The hashmap after data is added in it is presented as follows:")
   fmt.Println(hashmap)
}

The hashmap after data is added in it is presented as follows:
map[pen:20 pencil:10 scale:15]