How to correctly use os.Args in golang?

command-line, go

Solution

Define `configPath` outside the scope of your `if`.

configPath := ""

if len(os.Args) > 1 { 
  configPath = os.Args[1] 
  fmt.Println("1") // For debugging purposes 
} else { 
  configPath = "/etc/buildozer/config"
  fmt.Println("2") 
}

Note the '`configPath =`' (instead of `:=`) inside the `if`.

That way `configPath` is defined before and is still visible after the `if`.

See more at "Declarations and scope" / "Variable declarations".

Problem

I need to use config in my go code and I want to load config path from command-line. I try: ``` if len(os.Args) > 1 { configpath := os.Args[1] fmt.Println("1") // For debug } else { configpath := "/etc/buildozer/config" fmt.Println("2") } ``` Then I use config: ``` configuration := config.ConfigParser(configpath) ``` When I launch my go file with parameter (or without) I receive similar error ``` # command-line-arguments src/2rl/buildozer/buildozer.go:21: undefined: configpath ``` How should I correctly use os.Args?

Original source