go m := map[string]string{ "joe": "cat", "mary": "turtle", "bill": "canary" }
if _, ok := m["mary"]; ok {
fmt.Println("ok")
}
package main
import "fmt"
func main() {
m := map[string]string{ "joe": "cat", "mary": "turtle", "bill": "canary" }
if _, ok := m["mary"]; ok {
fmt.Println("ok")
}
}