1、闭包的坑
案例1：
package main
import (
"fmt"
"sync"
"time"
)
func main() {
wg := sync.WaitGroup{}
wg.Add(2)
for i := 0; i < 2; i++ {
go func() {
prefix := fmt.Sprintf("%d", i+1)
for c := 'A'; c <= 'A'; c++ {
fmt.Printf("%s:%c\n", prefix, c)
time.Sleep(time.Millisecond)
}
wg.Done()
}()
}
fmt.Println("Card")
wg.Wait()
}
输出如下：
标签：wg,fmt,sync,并发,func,go,main From： https://www.cnblogs.com/wuchangblog/p/17059467.html