C# IEnumerable Temel Özellikleri Aptallar için

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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.

Queue ve Stack: Queue ve Stack üzere bilgi kuruluşları da IEnumerator kullanılarak elemanlarının sırasıyla veya pahal sırasıyla nöbetlenmesi esenlanabilir.

Now the thing to note is that IEnumerable brought all the 5 records present in Salary table and then performed an in-memory filteration on the client side to get toparlak 2 records. So more data (3 additional records in this case) got transferred over the network and ate up the bandwidth unnecessarily.

The following code example demonstrates the best practice for iterating a custom collection by implementing the IEnumerable and IEnumerator interfaces. In this example, members of these interfaces are hamiş explicitly called, but they are implemented to support the use of foreach (For Each in Visual Basic) to iterate through the collection.

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 bey one example.

but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are

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 doesn't generate the SQL to query the database until you enumerate it? Consider this:

You don't have to open a book and learn how to traverse the tree - but simply use the foreach statement on that object and you're done.)

IEnumerable describes behavior, while List is an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away.

Bu alanda veya diğer bir alanda, benim ve gayrı yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim C# IEnumerable Temel Özellikleri hükmüm altına girmeniz mazmunına gelmemektedir.

Here is a very good article that details the differences between statement lambdas and expression lambdas and discusses the concepts of expression tress in greater depth: Revisiting C# delegates, expression trees, and lambda statements vs. lambda expressions.."

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

Bu hatmızın ileri satırlarında IEnumerator interface’ini detaylandırırken, kendi enumeratorümüzü oluşturmayıda bapşacağız. Yalnız C# IEnumerable Nasıl Kullanılır şimdilik bu örneğimizde derlem yahut dizi film konstrüksiyonlarının GetEnumerator metodunu kullanmamız alışverişimizi yeterince görmektedir.

The most important thing to realize is that, using Linq, the query does C# IEnumerable Kullanımı not get evaluated immediately. It is only run birli part of C# IEnumerable Nasıl Kullanılır iterating through the resulting IEnumerable in a foreach - that's what all the weird delegates are doing.