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golang init函数
init函数有一下几点特性:
init函数在main执行之前，自动被调用执行的，不能显示调用
每个包的init函数在包被引用时，自动被调用
每个包可以有多个init函数
同一个文件中可定义多个init()函数
相当于Java的静态函数 static{}
package main
import (
"fmt"
)
func init() {
fmt.Println("1 t.go....")
}
func init() {
fmt.Println("2 t.go....")
}
func main() {
fmt.Println("main...")
}output:
1 t.go....
2 t.go....
main...
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