public BookController(Bookrepository book)
{
bookrepository = book;
}
static void Main(string[] args)
{
Console.WriteLine("Conan the librarian");
Book cheese = new Book();
cheese.Title = "Cheese";
cheese.Id = 1;
cheese.Sequel = null;
Console.WriteLine(cheese?.Sequel?.Title);
//get all books in Db
IEnumerable <Book> books =
Bookrepository.GetBooks();
books = Bookrepository.GetBooksFromarray();
//find books with letter C
//use Where with named function
IEnumerable <Book> booksWithC
= books.Where(FilterBooksWithC);
//use with anonymous
booksWithC = books.Where(
b => b.Title.Contains("C")
);
foreach (Book book in booksWithC)
{
Console.WriteLine(book?.Title);
}
//Extension methods
int numberToDivide = 5;
Console.WriteLine($"{numberToDivide}/2=" +
$"{numberToDivide.DivideByNumber(2)}");
string input = "zes";
Console.WriteLine(input.CountChars());
//synchronous pattern
//Console.WriteLine("Calculating...");
//long result = Calculate();
//Console.WriteLine("in the meantime, what's your name?");
//string userInput = Console.ReadLine();
////print output
//Console.WriteLine($"Hello {userInput}");
//Console.WriteLine($"Result={result}");
//asynchronous pattern
Console.WriteLine("Calculating...");
//call method async
//receive Task object
var result = CalculateAsync();
//wait for it!
while (result.IsCompleted == false)
{
Console.Write("*");
Thread.Sleep(100);
}
//print output
Console.WriteLine($"\nResult={result.Result}");
//asynchronous api call
Console.WriteLine("Fetching quote..");
var apiResult = GetQuote();
while (apiResult.IsCompleted == false)
{
Console.Write("*");
Thread.Sleep(100);
}
Console.WriteLine($"\nQuote:{apiResult.Result}");
}
