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tasks := []func(){}
// 濉厖浠诲姟鍒楄〃...

concurrency := 10 // 骞跺彂鏁伴噺
semaphore := make(chan struct{}, concurrency)

var wg sync.WaitGroup
for _, task := range tasks {
    wg.Add(1)
    go func(task func()) {
        defer wg.Done()
        semaphore <- struct{}{} // acquire semaphore
        task()
        <-semaphore // release semaphore
    }(task)
}

wg.Wait()

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