In Go how to get a slice of values from a map?

As an addition to jimt’s post:

You may also use append rather than explicitly assigning the values to their indices:

m := make(map[int]string)

m[1] = "a"
m[2] = "b"
m[3] = "c"
m[4] = "d"

v := make([]string, 0, len(m))

for  _, value := range m {
   v = append(v, value)
}

Note that the length is zero (no elements present yet) but the capacity (allocated space) is initialized with the number of elements of m. This is done so append does not need to allocate memory each time the capacity of the slice v runs out.

You could also make the slice without the capacity value and let append allocate the memory for itself.