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goroutine 传指针的问题
source link: https://www.v2ex.com/t/807900
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goroutine 传指针的问题
for {
select {
case msg, ok := <-msgChan:
if !ok {
return
}
limit <- struct{}{}
go func(t *Message) {
send(t)
<-limit
}(msg)
}
}
msg 是*Message
这样的传参会导致 t 被下次循环的 msg 覆盖吗 （其实可以不这么控制并发，如果只能这么写的话
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