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Ways to check key exists in a map Go

Go map are almost like json, as we access value of json via key we also do the same with map of Go, There are multiple ways to check if a key exists in a map. In this article we are going to learn about how we can check if a key exists in a Go map. There is no fixed number of ways we can check for a key in map it depends on the developer in which way he wants to check the key, basically it depends on the requirements if he require only checking and no need of the value of key then he can use blank identifier for value variable of the key but, we are going to learn below mentioned 3 ways to check if key exists in map or not.

1. Using if statement and accessing value of key as well.
2. Using if statement and blank value identifier
3. Using Go map index notation
https://programmingeeksclub.com/golang-check-if-map-key-exists/
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