How Do I Iterate Through Keys in a Go Map?

Traversing Keys in a Go Language Map

A map in Go language stores key-value pairs, where keys are unique identifiers associated with their respective values. To iterate through all the keys in a map, several approaches can be utilized.

For instance, suppose we have a map defined as follows:

m := map[string]string{"key1": "val1", "key2": "val2"}

Using a Range-Based Loop:

This is the most straightforward method for iterating over both keys and values:

for k, v := range m {
    fmt.Printf("key[%s] value[%s]\n", k, v)
}

In this loop:

• k represents the key.
• v represents the value associated with the key.

If you're not interested in retrieving the value, you can omit the second variable, as seen here:

for k := range m {
    fmt.Printf("key[%s]\n", k)
}

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