Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Let’s look again at the IFlightUpdater interface from earlier.”

A block of code is set as follows:

public interface IFlightRepository {
  FlightInfo AddFlight(FlightInfo flight);
  FlightInfo UpdateFlight(FlightInfo flight);
  void CancelFlight(FlightInfo flight);
  FlightInfo? FindFlight(string id);
  IEnumerable<FlightInfo> GetActiveFlights();
  IEnumerable<FlightInfo> GetPendingFlights();
  IEnumerable<FlightInfo> GetCompletedFlights();
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

public interface IFlightUpdater {
  FlightInfo AddFlight(FlightInfo flight);
  FlightInfo UpdateFlight(FlightInfo flight);
  void CancelFlight(FlightInfo flight);
}

Any command-line input or output is written as follows:

  Assert.Equal() Failure   Expected: 60   Actual: 50

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Click Next, then give your test project a meaningful name and click Next again.”

Tips or important notes

Appear like this.