package main
import (
"fmt"
"log"
"os"
"strconv"
"strings"
)
func DemoTest() {
var Name string
var Version string
{
fmt.Printf("%s-%s",Name,Version)
}
}
func main(){
v:=strings.TrimSpace((string)("100"))
if f,err:=os.Open("config.yaml");err!=nil{
log.Fatalln(err)
fmt.Println(f) //注意执行无效
}else {
fmt.Println(f)
}
if i,err:=strconv.Atoi(v);err==nil{ //这里应该等于nil 看string,int的默认值
fmt.Println(i)
}
}