En iyi Tarafı C# IEnumerable Kullanımı

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Done rahatışı ve LINQ sorguları: IEnumerable, Language Integrated Query (LINQ) sorgularında yaygın olarak kullanılır. LINQ, veri koleksiyonları üzerinde sorgulama ve filtreleme üzere maslahatlemleri kolaylaştırır ve performansı fazlalıkrır.

Bu iki arayüzün yararlanma senaryoları farklıdır ve birbirlerinin namına kullanılmamalıdır. Bu makalede, IEnumerable ve IQueryable arasındaki farkları inceleyeceğiz.

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IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data

IEnumerable katışıksız just one method whereas IEnumerator özgü 2 methods (MoveNext and Reset) and a property Current. For easy understanding consider IEnumerable birli a box that contains IEnumerator inside it (though derece through inheritance or containment). See the code for better understanding:

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 "Alışveriş"; Şimdi adidaki harf bloğunu detaylıca inceleyelim.

Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead

The constructor is not responsible for returning veri to the caller. 2-We need to call a method that returns the cars array. That is in a real-world case, a method that returns an array should be coded in Garage and it should return an array, in which case, there would be no need to C# IEnumerable Temel Özellikleri use IEnumerable.

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, but you birey force it to iterate sooner using .ToList().

When you write a query using IEnumerable you are C# IEnumerable Nedir using the advantages of deferred execution and your query running when it accessed.

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a reset on C# IEnumerable Nerelerde Kullanılıyor enumerators, but this is largely a design mistake and shouldn't be used (it is even a formal C# IEnumerable Nerelerde Kullanılıyor requirement in the spec that iterator blocks throw an 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 C# IEnumerable Kullanımı yaşama be used with a foreach statement.

You should still avoid declaring the parameter type kakım List. Using IList allows the caller to pass arrays and any other objects whose type implements IList.