代码运行次数:0 packagemainimport"flag"import"fmt"funcmain(){wordPtr:=flag.String("word","foo","a string")numbPtr:=flag.Int("numb",42,"an int")boolPtr:=flag.Bool("fork",false,"a bool")//用程序中已有的参数来声明一个标志也是可以的。注意在标志声明函数中需要使用该参数的指针。varsvar ...
Theflagpackage contains multiple functions for parsing different flag types. There are two alternatives for each flag type. The difference is that the first one returns a pointer to a variable, the other one accepts a pointer to the variable. Withflag.Args, we can parse non-flag arguments; t...
package mainimport ( "flag" "fmt")func main() { debug := flag.Bool("verbose", false, "Verbose log output.") name := flag.String("name", "", "your Name") flag.Parse() fmt.Println(*debug) fmt.Println(*name)} 这个时候运行就可以看到我们命令行的参数：Flag 是...
从开发者的角度看,其实我们只要定义好变量,用 flag.XXVar 来绑定,最后 flag.Parse 就可以用: packagemainimport("fmt""flag")var( intflagintboolflagboolstringflagstring)funcinit(){ flag.IntVar(&intflag,"intflag",0,"int flag value") flag.BoolVar(&boolflag,"boolflag",false,"bool flag value") ...
example_flag.go 代码下载:example_flag.go packagemainimport("flag""fmt")varinputName=flag.String("name","CHENJIAN","Input Your Name.")varinputAge=flag.Int("age",27,"Input Your Age")varinputGender=flag.String("gender","female","Input Your Gender")varinputFlagvarintfuncInit(){flag.IntVar...
NewFlagSet 创建命令参数配置对象 func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet // 之后文档中的 f 调用都指代该命令配置 f := flag.NewFlagSet("server commond", 0) p := f.Int("p", 8080, "server port") f.Parse(os.Args[1:]) fmt.Printf("prot: %d", *p) ...
golang flag包 go flag 包用来解析命令行参数,通过一个简单的例子来了解下 package main import ( "flag" "fmt" ) func main() { // 参数1:命令行传递参数的名称 参数2:默认值 参数3:参数的说明 username := flag.String("name", "", "Input your name")...
不熟悉的同学建议多看看看go by example[2]的示例,讲的很清楚。 从开发者的角度看,其实我们只要定义好变量,用 flag.XXVar 来绑定,最后 flag.Parse 就可以用: package main import ( "fmt" "flag" ) var ( intflag int boolflag bool stringflag string ...
不熟悉的同学建议多看看看go by example的示例,讲的很清楚。 从开发者的角度看,其实我们只要定义好变量,用 flag.XXVar 来绑定,最后 flag.Parse 就可以用: packagemain import( "fmt" "flag" ) var( intflagint boolflagbool stringflagstring )
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