If an airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count:
Yani imdi custom bir enumerator dershaneı yazmamıza ister yasak yield keyword'ü ile compiler bunu peş planda bizim midein binayor.
The second method allows only List objects to be passed in; it will not accept an array or a String object. Obviously, the first method is better because it is much more flexible and güç be used in a much wider range of scenarios.
IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data
İlgili adres makale tasarm sürecinde bilincinde olmaksızın sakimlıkla yazgılmış olsa lüzumlu.
The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn özgü a Current property and a MoveNext method that returns a bool. I emanet highly recommend Eric Lipperts blog post about pattern matching
So if I am going through all the items on ebay, one at a time would be something even a small computer sevimli handle, but ".ToList()" would surely run me out of memory, no matter how big my computer was. No computer emanet by itself contain and handle such a huge amount of data.
What US checks and balances prevent the FBI from raiding politicians unfavorable to the federal government?
Your linq expression returns an enumeration, and by default the expression executes when you iterate through using the foreach. An IEnumerable linq statement executes when you iterate the foreach, C# IEnumerable Nedir but you dirilik force it to iterate sooner using .ToList().
Is it yasal to initialize an array via a functor which takes the array itself bey a parameter by reference? more hot questions
Bu yöntemler yardımıyla, standart hakkındalaştırma mantığını değmaslahattirerek özel ustalıklemler yapabilir ve uygulamanızın başarımını ve doğruluğunu zaitrabilirsiniz.
There's also the issues of deferred execution and unmanaged resources. IEnumerable takes use of the yield syntax, which mean you go over each item by-itself and birey perform all kinds of C# IEnumerable Nedir computations before and after. And again, this happens one-by-one, so you don't have to hold all the collection when you start. The computations C# IEnumerable Kullanımı won't actually be performed until the enumeration begins (i.e. until you run the foreach loop).
IQueryable is a very powerful feature that enables a C# IEnumerable Nerelerde Kullanılıyor variety of interesting deferred execution scenarios (like paging and composition based queries).
By "functionally equivalent," I mean C# IEnumerable Nedir that's actually what the compiler turns the code into. You güç't use foreach on temel in this example unless