How to check key exists in a map Golang?

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To check key exists in a golang map, use if...else statement with map['key'] if it will return value it’s means key exists in a golang map.

Today, I’m going show you how do i check key exists in golang map.

Let’s start

Check key exists in golang map

Here, we will create s sample map with some data and try to check key contain in map

package main
import (

func main() {
  mymap := make(map[string]string)
  mymap["first"] = "aguidehub"
  mymap["second"] = "infinitbility"
  mymap["third"] = "sortoutcode"
  _, isExist := mymap["third"]
  fmt.Println("is third exists", isExist)

In the above program, we are trying to check key in map, let’s see the output.


is third exists true

Try it yourself

All the best 👍

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