from the documentation of *func (*Timer) Reset
<https://golang.org/pkg/time/#Timer.Reset>*
>
> To reuse an active timer, always call its Stop method first and—if it had
> expired—drain the value from its channel. For example:
> if !t.Stop() {
> <-t.C
> }
> t.Reset(d)
>
but my code blocks at the line "<-t.C"
code at: https://play.golang.org/p/8XjpvMFt_2
could anyone help me out? thanks.
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