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sync wait group
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@ -1,11 +1,15 @@
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package main
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import "fmt"
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import (
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"fmt"
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"sync"
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)
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func main() {
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// unbuf()
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// buf()
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nBuf()
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// nBuf()
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syncWaitGroup()
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}
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/*
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@ -45,3 +49,17 @@ func nBuf() {
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<-done
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}
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}
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func syncWaitGroup() {
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var wg sync.WaitGroup
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// 开N个后台打印线程
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func(i int) {
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fmt.Println("你好, 世界", i)
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wg.Done()
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}(i)
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}
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// 等待N个后台线程完成
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wg.Wait()
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}
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