creating and assigning values to a map in go code example
Example 1: length of map golang
package main
import "fmt"
func main() {
var employee = make(map[string]int)
employee["Mark"] = 10
employee["Sandy"] = 20
// Empty Map
employeeList := make(map[string]int)
fmt.Println(len(employee)) // 2
fmt.Println(len(employeeList)) // 0
}
Example 2: go get from map
var id string
var ok bool
if x, found := res["strID"]; found {
if id, ok = x.(string); !ok {
//do whatever you want to handle errors - this means this wasn't a string
}
} else {
//handle error - the map didn't contain this key
}