go 的return值在defer前返回,defer延迟执行
package main
import "fmt"
var name string= "go"
func TestName() string {
defer func() {
name="python"
}()
fmt.Println(name)
return name
}
func main() {
myname:=TestName() //go
fmt.Println(name) // python
fmt.Println(myname) // return go
}
//
go
python
go
func Testdefer() (i int){
i = 100
defer func() {
i += 100
//fmt.Println(i)
}()
return i
}
func test(i int) func() (i int ){ //闭包
//
return func() int {
i+=1000
return i
}
}
func main() {
x:=Testdefer()
fmt.Println(x)
f:=test(100)
fmt.Println(f())
fmt.Println(f())
fmt.Println(f())
//
GOROOT=C:\Program Files\Go #gosetup
GOPATH=C:\Users\Administrator\go #gosetup
"C:\Program Files\Go\bin\go.exe" build -o C:\Users\Administrator\AppData\Local\Temp\___1go_build_test17_go.exe D:\awesomeProject\src\test\test17.go #gosetup
C:\Users\Administrator\AppData\Local\Temp\___1go_build_test17_go.exe #gosetup
200
1100
2100
3100
进程 已完成,退出代码为 0
}