func PromptRequired(prompt string, args ...interface{}) (s string) {
	for strings.Trim(s, " ") == "" {
		s = Prompt(prompt, args...)
	}
	return s
}
// PromptRequired prompts user for input with default value and requires an input.
PromptRequired prompts user for input with default value and requires an input.
// PromptRequired prompts user for input with default value and requires an input .
func PromptRequired(prompt string, args ...interface{}) (s string) {
	for strings.Trim(s, " ") == "" {
		s = Prompt(prompt, args...)
	}
	return s
}
func PromptRequired ( prompt string , args ... interface { } ) ( s string ) { for strings . Trim ( s , " " ) == " " { s = Prompt ( prompt , args ... ) } return s }
PromptRequired prompts user for input with default value and requires an input.
PromptRequired prompts user for input with default value and requires an input .