Below is the format to check if a key exists in the map<\/p>\n\n\n\n
val, ok := mapName[key]<\/code><\/pre>\n\n\n\nThere are two cases<\/p>\n\n\n\n
- If the key exists val <\/strong>variable be the value of the key in the map and ok <\/strong>variable will be true<\/li>
- If the key doesn\u2019t exist val<\/strong> variable will be default zero value of value type and ok <\/strong>variable will be false<\/li><\/ul>\n\n\n\n
Let\u2019s see an example<\/p>\n\n\n\n
package main\n\nimport \"fmt\"\n\nfunc main() {\n \/\/Declare\n employeeSalary := make(map[string]int)\n\n \/\/Adding a key value\n employeeSalary[\"Tom\"] = 2000\n fmt.Println(\"Key exists case\")\n val, ok := employeeSalary[\"Tom\"]\n fmt.Printf(\"Val: %d, ok: %t\\n\", val, ok)\n fmt.Println(\"Key doesn't exists case\")\n\n val, ok = employeeSalary[\"Sam\"]\n fmt.Printf(\"Val: %d, ok: %t\\n\", val, ok)\n}<\/code><\/pre>\n\n\n\n