import (
"math/rand"
"time"
)
// ...
rand.Seed(time.Now().Unix()) // initialize global pseudo random generator
message := fmt.Sprint("Gonna work from home...", reasons[rand.Intn(len(reasons))])
其他解决方案是使用Rand对象。
s := rand.NewSource(time.Now().Unix())
r := rand.New(s) // initialize local pseudorandom generator
r.Intn(len(reasons))
602392714
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