情况:- S# n5 `$ U. N
我有一个值,需要随机选择一个值。然后我想用一个固定的字符串连接它。到目前为止,这是我的代码:6 J( A. B8 n9 ~* h0 c
func main()create the reasons slice and append reasons to itreasons := make([]string,0)reasons = append(reasons, "Locked out", "ipes broke", "Food poisoning", "Not feeling well")message := fmt.Sprint("Gonna work from home...",pick a random reason )} 5 G8 O8 O$ l: S4 T4 n
问题:2 h# p2 p: a) `. h' t- F6 m4 d
是否有内置函数可以通过执行来执行选择随机原因部分来帮我?' B: G# D. m" ~7 J) q
3 W* y" c4 m3 d- ?# G解决方案: ' x% J& Q: z+ A. _8 d* S% I 使用功能,Intn从rand在包中选择随机指数。- |' n; r& `9 ^ i7 e, B. a% o
import ( "math/rand" "time")// ...rand.Seed(time.Now().Unix() // initialize global pseudo random generatormessage := fmt.Sprint("Gonna work from home...",reasons[rand.Intn(len(reasons))])1 ]7 I! U/ J% l- X* S. [! b
使用其他解决方案Rand对象。 + G _+ V4 z% F
s := rand.NewSource(time.Now().Unix())r := rand.New(s) // initialize local pseudorandom generator r.Intn(len(reasons)) ! r0 e/ i! v H6 `- u8 p8 k