Bir Unbiased Görünüm C# IEnumerable Temel Özellikleri
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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.
Koleksiyonlar Arasında Gezinmeyi Katkısızlar: IEnumerable, koleksiyonlar beyninde kolay gezinmenizi katkısızlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde prosedür yapabilirsiniz.
The second example returns an IEnumerable that contains all the information needed to run the query later on.
Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memory.
By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.
IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator katışıksız custom C# IEnumerable Nedir enumeration logic.
Bu yöntemler yardımıyla, ölçünlü karşıtlaştırma mantığını değmeslektirerek özel maslahatlemler yapabilir ve uygulamanızın performansını ve doğruluğunu zaitrabilirsiniz.
For small result sets this is likely to be a single trip, for large ones you're sending a request for more rows from the results, but it doesn't re-run C# IEnumerable Nedir the entire query.
Else use an IEnumerable. The default should be to use the on-demand C# IEnumerable Nedir evaluation in the second example, as that generally uses less memory, unless there is a specific reason to store the results in a list.
By using IEnumerable in your API, you provide yourself the flexibility to change the internal implementation at any time without C# IEnumerable Nasıl Kullanılır changing any other code
Adidaki sınıfta yaptıklarımızı aşama adım anlatmadan önce şayet bir sınıfa IEnumerator implemente edilirse ne metotların implement olacağına bileğinmek isterim. Düzenlediğim haliyle adidaki kod yapısını inceleyelim;
Expression trees are a very important construct in C# and on the .NET ortam. (They are important in general, but C# makes them very useful.) To better understand the difference, I recommend reading about the differences between expressions
On the flip side, it is usually best to declare a method’s return type by using the strongest type possible (trying derece to commit yourself to a specific type). Share Follow
Why does the Clausius inequality C# IEnumerable Temel Özellikleri involve a single term/integral if we consider a body interacting with multiple heat sources/sinks?