golang map references

The CS naming for this type of structure escapes me. But for now, I’ll call it “dot notation”. I use this all the time in typescript (and in python).

I wanted a way to have const’s in Go but structured so that I could call them elsewhere in the following manner; Foo[Bar]. This is much cleaner than Foo["bar"] as the compiler prevents typo’s such as Foo["baz"].

type MapKey string

const (
    Key1 MapKey = "foo"
    Key2 MapKey = "bar"
    Key3 MapKey = "baz"
)

var MyMap = map[MapKey]string{
    Key1: "foo",
    Key2: "bar",
    Key3: "baz",
}

fmt.Println(MyMap[Key1]) // "foo"

It’s a little repetitious but works well for me.

Tags:

#go