Get an arbitrary key/item from a map

Question

I am new to Go and now I want to get an arbitrary item from a map; what\'s the idiomatic way to do that? I can only think of something like this:

func get_some_k         


        

Answer 1

In my case, the map only had one key which I needed to extract so for that you can do:

    var key string
    var val string
    for k, v := range myMap {
        key = k
        val = v
        break
    }

For multiple keys you could do something like,

func split_map(myMap map[string]string, idx int) (string[], string[]) {
    keys := make([]string, len(myMap))
    values := make([]string, len(myMap))
    count := 0
    for k, v := range myMap {
        keys[count] = k
        values[count] = v
        count = count + 1
    }
    return keys, values
}

While for accessing ith element,

func get_ith(myMap map[string]string, idx int) (string, string) {
    count := 0
    for k, v := range myMap {
        if idx == count {
            return k, v
        }
        count = count + 1
    }
    return "", ""
}