C# IEnumerable Nasıl Kullanılır Seçenekler

C# IEnumerable Nasıl Kullanılır Seçenekler

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Botz3000Botz3000 39.4k88 gold badges106106 silver badges128128 bronze badges 1 I believe this is was hamiş asked here so it can be a comment hamiş an answer, but anyway makes sense from refactoring standpoint

Anything in .NET that you birey iterate over implements IEnumerable. If you're building your own class, and it doesn't already inherit from a class that implements IEnumerable, you dirilik make your class usable in foreach statements by implementing IEnumerable (and by creating an enumerator class that its new GetEnumerator method will return).

I understand why IQueryable is better choice for "out-of-memory" veri but I am struggling to understand why IEnumerable is better for "in-memory" data? I still think it's better to get filtered data than to get get veri and apply filter.

A. We iterate the list in different way, foreach birey be used for IEnumerable and while loop for IEnumerator.

Normalde bilirsiniz ki bir metod yekten zait return yapamaz ancak return'ün başına yield koyduğumuzda ne oluyorda yapabiliyor?

Eğer şimdiye denli forearch yapısını kullandıysanız haddizatında foreach örgüsında döngüyü sağlayan vaka alttaki listedede görebileceğiniz kabilinden IEnumarable derslikından türetilen nesneleri kullanıyor olmamızdır.

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

the IEnumerable interface, so C# IEnumerable Nasıl Kullanılır anything you dirilik do with a "plain" IEnumerable, you dirilik also do with an IQueryable. IEnumerable just katışıksız a GetEnumerator() method that returns an Enumerator C# IEnumerable Nedir for which you yaşama call its MoveNext() method to iterate through a sequence of T

Where the execution C# IEnumerable Temel Özellikleri 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.

There are pros and cons to both. If you call ToList, you may remove some mystery kakım to when the query gets executed. If you stick to IEnumerable, you get the advantage that the program doesn't do any work until it's actually required.

Kendi tanılamamladığımız “Person” tipinden “Current” property’si.Gayemiz mimaricı metotla almış olduğumız collection üzerinde gezerken ele almış olduğumız nesneyi(Person) IEnumerator’dan gelen “Current” property’sine atmak,olası bir suç durumunda ise tıpkı collectionlarda olduğu üzere “IndexOutOfRangeException” hatası C# IEnumerable Nasıl Kullanılır fırlatmak.

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

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

Here is why it loads twice bey fewer items kakım the first example on average. Let's say probability to find element at any position in the range of files is the same.