Conventions used

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

CodeInText: 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: "Go to our ShoppingListTableViewController.swift file and update one line inside the didSelectAdd method. "

A block of code is set as follows:

html, body, #map {
 height: 100%; 
 margin: 0;
 padding: 0
}

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

@IBAction func didSelectAdd(_ sender: UIBarButtonItem) {
  requestInput(title: "Shopping list name",
    message: "Enter name for the new shopping list:",
    handler: { listName in
      let listCount = self.lists.count
      ShoppingList(name: listName).save() { list in
        self.lists.append(list)
        self.tableView.insertRows(at: [IndexPath(row: listCount, section: 0)], with: .top)
      }
    })
}

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

~ $ mongod --config /usr/local/etc/mongod.conf

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Build and run the Run Scheme on the My Mac platform"