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v2fly/common/dice/dice.go

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// Package dice contains common functions to generate random number.
// It also initialize math/rand with the time in seconds at launch time.
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package dice
import (
"math/rand"
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"time"
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)
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// Roll returns a non-negative number between 0 (inclusive) and n (exclusive).
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func Roll(n int) int {
if n == 1 {
return 0
}
return rand.Intn(n)
}
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func init() {
rand.Seed(time.Now().Unix())
}