5 Temel Unsurları için C# IEnumerable Kullanımı

5 Temel Unsurları için C# IEnumerable Kullanımı

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, and the database only returns the rows that are relevant. But if we had returned a List from AllSpotted(), then it may run slower because the database could return far more data than is actually needed, and we waste cycles doing the filtering in the client.

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The second example returns an IEnumerable that contains all the information needed to run the query later on.

A. We iterate the list in different way, foreach yaşama be used for IEnumerable and while loop for IEnumerator.

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Basically it katışıksız a method to get the next item in the collection. It doesn't need the whole C# IStructuralComparable Nasıl kullanılır collection to be in memory and doesn't know how many items are in it, foreach just keeps getting the next C# IStructuralComparable Kullanımı item until it runs out.

While it might seem that only array types kişi make use of this construct, the truth of the matter is

ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just noticed that when re-reading.

"These methods that extend IQueryable(Of T) do not perform any querying directly. Instead, their functionality is to build an Expression object, which is an expression tree that represents the cumulative query. "'

Are there substantive differences between the different C# IStructuralComparable Kullanımı approaches to "size issues" in category theory?

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Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.

Bu C# IStructuralComparable Nasıl kullanılır alfabemızın müterakki satırlarında IEnumerator interface’ini detaylandırırken, kendi enumeratorümüzü oluşturmayıda mevzuşacağız. Amma şimdilik bu örneğimizde derme yahut paradigma dokumalarının GetEnumerator metodunu kullanmamız meslekimizi yeterince görmektedir.

C#’ta türlü türlü komutlar mevcuttur. Bazenları saf olarak ilk etaplarda C# IStructuralComparable Kullanımı ziyade kullanma alanını sezdirmeselerde, dile olan aşinalık ilerledikçe mantığını ve varlığını daha kemiksiz anladığımız keywordlerin kıymeti artmaktadır.