I have a quick question. I am fairly new to golang. Say I have a map like so:
map[int]string
How could I randomly split it into two maps or arrays and as close to even as possible? So for example, if there are 15 items, it would be split 7 - 8.
For example:
func split(m map[int]string) (odds map[int]string, evens map[int]string) {
n := 1
odds = make(map[int]string)
evens = make(map[int]string)
for key, value := range m {
if n % 2 == 0 {
evens[key] = value
} else {
odds[key] = value
}
n++
}
return odds, evens
}
It is actually an interesting example, because it shows a few aspects of Go that are not obvious for beginners:
range m iterates in a random order, unlike in any other language as far as I know,% returns the remainder of the integer division,You could do something like this:
myStrings := make(map[int]string)
// Values are added to myStrings
myStrings2 := make(map[int]string)
// Seed system time for random numbers
rand.Seed(time.Now().UTC().UnixNano())
for k, v := range myStrings {
if rand.Float32() < 0.5 {
myStrings2[k] = v
delete(myStrings, k)
}
}