IEnumerable tüm verileri tuzakıp memory de sara, sorgulama sorunlemlerini memory üzerinden yaparken IQueryable ise şartlara bağlı query oluşturarak elden veritabanı üzerinden sorgulama sorunlemi yapar.
ümit ederim bu mevzu karşı kafanızda bir rey oluşturabilmişimdir.Bu yazı karınin oluşturduğum projenin kodlarını GitHub hesabımdaki “MyArticlesCodes” repository’sinde bulabilirsiniz.
IEnumerable interface’i yardımıyla bir sınıf itere edilebilir özellik kazanmaktadır. Peki bir derslikın itere edilebilirlik özellik kazanması neydi?
IEnumerable execute a select query on the server side, load veri in-memory on a client-side and then filter veri
By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.
static public IEnumerable VerileriGetir() yield return "Pazartesi"; yield return "Salı"; yield return "Çarşamba"; yield return "Perşembe"; yield return "Cuma namazı"; yield return "Cumartesi"; yield return "Pazar"; Şimdi hordaki harf bloğunu ayrıntılıca inceleyelim.
Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by C# IEnumerable Nerelerde Kullanılıyor only specifying the behavior I give LINQ a chance to defer evaluation and possibly optimize the program. Remember how LINQ doesn't generate the SQL to query the database C# IEnumerable Temel Özellikleri until you enumerate it? Consider this:
To begin examining the process of implementing existing .Safi interfaces, let’s first look at the role of
Usually you don't use IEunumerable directly. It is the base class for a number of other collections that you are more likely to use. IEnumerable, for example, provides the ability to loop through a collection with foreach.
By using IEnumerable in your API, you provide yourself the flexibility to change the internal implementation at any time without changing any other code
It is cleaner, your users don't get a list where they shouldn't (they could cast it to a Listafter all) and you don't need to create C# IEnumerable Nasıl Kullanılır a Listobject.
IEnumerable enable implicit reference conversion for array types which known kakım Covariance. Consider the following example:
IEnumerable is an interface that defines one method GetEnumerator which returns an IEnumerator interface, this in turn allows readonly C# IEnumerable Nasıl Kullanılır access to a collection. A collection that implements IEnumerable güç be used with a foreach statement.
Here is why it loads twice as fewer items as the first example C# IEnumerable Nedir on average. Let's say probability to find element at any position in the range of files is the same.