我是一名新的 Go 學(xué)習(xí)者，當(dāng)我到達(dá)&ldquo;關(guān)閉頻道&rdquo;部分時(shí)，教程會(huì)插入此代碼片段（我將刪除原始評(píng)論）：? ? package main? ? import "fmt"? ? func main() {? ? ? ? jobs := make(chan int, 5)? ? ? ? done := make(chan bool)? ? ? ?go func() {? ? ? ? ? ?for {? ? ? ? ? ? ? ?j, more := <-jobs? ? ? ? ? ? ? ?if more {? ? ? ? ? ? ? ? ? ?fmt.Println("received job", j)? ? ? ? ? ? ? ?} else {? ? ? ? ? ? ? ? ? ?fmt.Println("received all jobs")? ? ? ? ? ? ? ? ? ?done <- true? ? ? ? ? ? ? ? ? ?return? ? ? ? ? ? ? ?}? ? ? ? ? ?}? ? ? ?}()? ? ? ?for j := 1; j <= 18; j++ {? ? ? ? ? ?jobs <- j? ? ? ? ? ?fmt.Println("sent job", j)? ? ? ?}? ? ? ?close(jobs)? ? ? ?fmt.Println("sent all jobs")? ? ? ?<-done? ? }原始代碼在作業(yè)發(fā)送者循環(huán)中設(shè)置 3 而不是 18。在play.golang.org中執(zhí)行這段代碼是我不完全理解的。它總是輸出以下內(nèi)容：sent job 1sent job 2sent job 3sent job 4sent job 5received job 1received job 2received job 3received job 4received job 5received job 6sent job 6sent job 7sent job 8sent job 9sent job 10sent job 11sent job 12received job 7received job 8received job 9received job 10received job 11received job 12received job 13sent job 13sent job 14sent job 15sent job 16sent job 17sent job 18sent all jobsreceived job 14received job 15received job 16received job 17received job 18received all jobs所以我知道一個(gè)頻道的&ldquo;隊(duì)列&rdquo;（我知道這個(gè)術(shù)語(yǔ)不是最準(zhǔn)確的，但為了自己學(xué)習(xí)，這是我對(duì)頻道的理解）的大小為 5，所以前 10日志消息對(duì)我來(lái)說(shuō)很好。但是消息 6 和 13 如何在實(shí)際發(fā)送之前輸出它們的接收信息呢？如果通道大小為 5，如何連續(xù)發(fā)送 7 條消息？我錯(cuò)過(guò)了什么？