如何在Go中获取地图的任何给定元素？

Question

Suppose I have a map[string]int, and I want the key with the shortest length (in bytes). If I don't know any particular element that the map contains, how do I get a sample of it so I can do

var shortest string
for key, _ := range myMap {
    if len(key) < len(shortest) {
        shortest = key
    }
}

Answer 1

You can use a for loop and break out of it immediately to sample just one element.

var shortest string
for key, _ := range myMap {
    shortest = key
    break
}
for key, _ := range myMap {
    if len(key) < len(shortest) {
        shortest = key
    }
}

Ugly, but it works.