Greatest Kılavuzu C# IEnumerable Nerelerde Kullanılıyor için

Greatest Kılavuzu C# IEnumerable Nerelerde Kullanılıyor için

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IEnumerable bütün verileri düzenıp memory bile tutarak, sorgulama fiillemlerini memory üzerinden yaparken IQueryable ise şartlara rabıtlı query oluşturarak doğrudan veritabanı üzerinden sorgulama aksiyonlemi yapar.

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

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For example, if you do hamiş 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.

Said in a very simple way, that any object implementing this interface will provide a way to get an enumerator. An enumerator is used with the foreach kakım one example.

So if you working with only in-memory data collection IEnumerable is a good choice but if you want to query data collection which is connected with database `IQueryable is a better choice as it reduces network traffic and uses the power of SQL language.

The "inner" member does not have "Animal" instances in it, but rather "Species" instances, which was very strange for me. The "outer" member does contain "Animal" instances. I presume that the two delegates determine which goes in and what goes out of it?

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Where the execution of a query is going to be performed "in process", typically all that's required is the code (kakım code) to execute each part of the query.

Örneğin, bir List veya ArrayList üzere koleksiyonların kucakindeki verileri sıralı bir şekilde vira etmek veya belli başlı bir koşula göre filtrelemek kucakin IEnumerator kullanılabilir. Bu, yazılı sınavm geliştirme sürecinde verimliliği fazlalıkrır ve kodun okunabilirliğini C# IEnumerable Nasıl Kullanılır iyileştirir.

" 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 C# IStructuralComparable Temel Özellikleri sense.

Generally, don't worry about what's actually in the IEnumerables, birli it will be completely different from your actual code. Only worry about the actual output when you iterate over it :)

user541686user541686 208k132132 gold C# IStructuralComparable nedir badges547547 silver badges911911 bronze badges 3 i also used this and was loooong happy.

The most important C# IStructuralComparable nerelerde kullanılıyor thing to realize is that, using Linq, the query does hamiş get evaluated immediately. It is C# IStructuralComparable Nasıl kullanılır only run birli part of iterating through the resulting IEnumerable in a foreach - that's what all the weird delegates are doing.