utility

type Logger struct {
	LogLevel int
	// contains filtered or unexported fields
}

type LoggerIF interface {
	GetLogLevel() int
	ChangeLogLevel(logLevel int)
	LogV(content string)
	LogD(content string)
	LogI(content string)
	LogW(content string)
	LogE(content string)
	// contains filtered or unexported methods
}

type StringBuilder struct {
	// contains filtered or unexported fields
}

type StringBuilderIF interface {
	Append(text string) StringBuilder
	Delete()
	String() string
}