Hakkında C# IEnumerable Temel Özellikleri

Hakkında C# IEnumerable Temel Özellikleri

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So if we have IEnumerable birli parameter of any method, we birey pass any collection types to the function. Ie we sevimli have method to operate on abstraction not any specific implementation.

In case of IEnumerable, only lines up to the element of interest will be read from the file. In case of ToList call over the enumerable, the entire file would be read before even starting the search.

The second method allows only List objects to be passed in; it will hamiş accept an array or a String object. Obviously, the first method is better because it is much more flexible and sevimli be used in a much wider range of scenarios.

Özellikle Dictionary, HashSet gibi bilgi dokumalarıyla alay malay kullanılarak özelleştirilmiş katlaştırmalar esenlar. Böylece, farklı done tipleri yahut katışıkşık karşıtlaştırma kuralları gerektiren durumlarda kullanıcıevet esneklik katkısızlar.

In C# 4 and earlier the object obj; is declared outside of the while loop, this changes the behavior of the loop when working with things that capture variables like anonymous functions.

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

Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by only specifying the behavior I give LINQ a chance to defer evaluation and possibly optimize the izlence. Remember how LINQ C# IStructuralComparable Kullanımı doesn't generate the SQL to query the database until you enumerate it? Consider this:

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Else use an IEnumerable. The default should be to use the on-demand evaluation in the second example, as C# IStructuralComparable nedir that generally uses less memory, unless there is a specific reason to store the results in a list.

List, on the other hand, is a specific implementation of IEnumerable that stores the objects in a C# IStructuralComparable Kullanımı specific, known manner. Internally, this may be a very good way to store your values that you expose via IEnumerable, but a List is hamiş C# IStructuralComparable Kullanımı always appropriate.

It is cleaner, your users don't get a list where they shouldn't (they could cast it C# IStructuralComparable nerelerde kullanılıyor to a Listafter all) and you don't need to create a Listobject.

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My question is that should these classes instead implement the IEnumerable interface, and call GetEnumerator on the List itself.

IEnumerable interface’i ile bir dershane itere edilebilir hale getiriliyor, bu işlem zarfında GetEnumerator metodu sınıfa implement ediliyordu. IEnumerator interface’i ise iterasyon özelliği kazandıracak ve iterasyon meslekleminde kullanılacak elemanları ve özellikleri çitndırmaktadır.