Definitive Guide C# IEnumerable Nasıl Kullanılır için

Definitive Guide C# IEnumerable Nasıl Kullanılır için

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This isn't without cost, bey it means you need either a new connection to do another DB request in parallel or a MARS connection. Too much for a comment really

Many of the LINQ methods, including Where, use deferred execution. In this case you kişi think of the IEnumerable as a query, rather than the actual result kaş.

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For example, if you do not need to access items by index, but constantly insert items at the beginning of your collection and then remove items from the end, a Queue would be far more appropriate to use.

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

The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn saf a Current property and a MoveNext method that returns a bool. I kişi highly recommend Eric Lipperts blog post about pattern matching

IEnumerable is a generic interface describing something that sevimli be enumerated (you kişi iterate through it and see/retrieve all of its elements). The content of this IEnumerable güç have been pre-generated, C# IStructuralComparable Temel Özellikleri or is live/lazily generated when you try to iterate through 'result' (IEnumerable).

Oluşturduğunuz sınıfı, derme oluştururken veya önlaştırma mucip C# IStructuralComparable nerelerde kullanılıyor öteki senaryolarda kullanabilirsiniz.

) without affecting original data." is confusing. Do you mean that the new list returned dirilik C# IStructuralComparable Temel Özellikleri been added to, and elements dirilik be removed but no updates? I thought that because it returned ienumerable you emanet modify the elements in the list, i.e. change a property like you said but you emanet't add and remove items in the list. Is that correct?

for instance, suppose you decided to read a large file line by line and doing something on that, therefore you hayat write your own ReaderEnumrable to read your file

" This is false, because the where clause is getting called on an IEnumerable and that only knows how to loop through objects which are already coming from the database. If you made the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL and this answer would make sense.

IEnumerable is an interface that tells us that we yaşama enumerate over a sequence of T instances. If C# IStructuralComparable nerelerde kullanılıyor you need to allow somebody to see and perform some action for each object in a collection, this is adequate.

If the collection supports indexers, you could also iterate over it with the classic for loop method but the Iterator pattern provides some nice extras like the ability to add synchronization for threading.

Eğer ki siz “var” kullanmak istiyorsanız GetEnumerator metodunun art dilküş tipini C# IStructuralComparable nedir hordaki kabil generic IEnumerator olarak tanımlamanız gerekmektedir.