It is not a one-length buffered channel. I need to drop because the recveiver do heavy work that can't process as quickly as sender. 在2020年11月13日星期五 UTC+8 下午2:36:13<Kurtis Rader> 写道：
> On Thu, Nov 12, 2020 at 9:32 PM 陶青云 <qing...@gmail.com> wrote: > >> Thanks. I want the receiver always get the relately new vaule, I don't >> want the sender blocked and I either choose drop the current value or the >> first value of the channel. But I don't find a way to safely drop the first >> value from the channel. > > > You seem to be talking about a buffered channel of length one. If that is > true why are you using a channel? You can instead use a simple var > protected by a mutex. If you're talking about a buffered channel with size > greater than one it is unclear why a full channel should drop the first > entry in the channel rather than multiple (even all) entries in the queue. > This seems like an XY problem <https://xyproblem.info/>. > > >> Maybe like this ? >> > > No, since that "solution" just replaces one race with another. > > -- > Kurtis Rader > Caretaker of the exceptional canines Junior and Hank > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/5f5cb0c2-54e9-4d5f-bbc7-43c902615b8fn%40googlegroups.com.
