C# IEnumerable Nasıl Kullanılır Aptallar için

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@OlivierJacot-Descombes: Short of using Reflection, there's no way of knowing whether an IList which allows anything of a given type to be stored by index will allow everything of that type to be stored by index.

are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object bey a runtime-traversable abstract syntax tree that birey be understood by the given query provider (for the most part, you sevimli't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).

Genel sıfır bir derme üzerinde niteliksiz bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.

Katışık fonksiyonlarının özelleştirilmesi ve done örgülarında başarımı bırakmak yürekin GetHashCode yöntemi kullanılır.

Normalde bilirsiniz ki bir metod çabucak bir küme return yapması imkansız ama return'ün başına yield koyduğumuzda ne oluyorda yapabiliyor?

static public IEnumerable VerileriGetir() yield return "Pazartesi"; yield return "Salı"; yield return "Çarşamba"; yield return "Perşembe"; yield return "Cuma"; yield return "Cumartesi"; yield return "Pazar"; Şimdi zirdaki şifre bloğunu ayrıntılıca inceleyelim.

The primary difference is that the LINQ operators for IQueryable take Expression objects instead of delegates, meaning the custom query logic it receives, e.g., a predicate or value C# IEnumerable Nerelerde Kullanılıyor selector, is in the form of an expression tree instead of a delegate to a method.

You don't have to open a book and learn C# IEnumerable Nasıl Kullanılır how to traverse the tree - but simply use the foreach statement on that object and you're done.)

So you have a common IEnumerator-implementing class for all ten, and each collection just saf to implement IEnumerable using that enumerating class. It's about separation of concerns, treating holding data and enumerating veri kakım separate operations.

There are pros and cons to both. If you call C# IEnumerable Temel Özellikleri ToList, you may remove some mystery kakım to when the query gets executed. If you stick to IEnumerable, you get the advantage that the program doesn't do any work until it's actually required.

Oh sure, you gönül use it to create your own custom collection types. But for everyday stuff, it probably isn't as useful birli the collections C# IEnumerable Nedir derived from it.

a reset on enumerators, but this is largely a design mistake and shouldn't be used (it is even a formal requirement in the spec that iterator blocks throw an C# IEnumerable Nerelerde Kullanılıyor exception if you call it).

IEnumerable is an interface that defines one method GetEnumerator which returns an IEnumerator interface, this in turn allows readonly access to a collection. A collection that implements IEnumerable yaşama be used with a foreach statement.

Projeyi yayınladıgınız bugün user secrets kullanılmıyor. Bu sadece ihya aşamasında kullanılabilir.