Initializing a Go map in a single statement

Question

Yes, you can create a map with a single statement (called a composite literal in the spec):

var keys = map[int]string{
    1: "aa",
    2: "ab",
    3: "ac",
    4: "ba",
    5: "bb",
    6: "bc",
    7: "ca",
    8: "cb",
    9: "cc",
}

Or, if you are inside of a function, you can use a short variable declaration:

keys := map[int]string{
    1: "aa",
    2: "ab",
    3: "ac",
    4: "ba",
    5: "bb",
    6: "bc",
    7: "ca",
    8: "cb",
    9: "cc",
}