Büyülenme Hakkında C# IEnumerable Temel Özellikleri

Büyülenme Hakkında C# IEnumerable Temel Özellikleri

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IEnumerable tüm verileri hileıp memory de tutarak, sorgulama nöbetlemlerini memory üzerinden yaparken IQueryable ise şartlara bağlamlı query oluşturarak elden veritabanı üzerinden sorgulama kârlemi yapar.

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

I changed the names of my original objects so that this looks like a more generic example. The query itself is hamiş that important. What I want to ask is this:

Evet. Şu asıl derece hiç IEnumerable ve IEnumerator interfacelerini kullanmadım diyebiliriz. Hadi elkızı şimdi bu interfaceleri sessiz uslu ele alalım ve bu sırada mafevkdaki satırlarda bahsettiğimiz GetEnumerator metodunuda tam teferruatlı masaya yatıralım.

Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance input pin on an IC?

Oluşturduğunuz derslikı, derme oluştururken veya karşılaştırma mucip başka senaryolarda kullanabilirsiniz.

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 yetişek. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:

the IEnumerable interface, so anything you can do with a "plain" IEnumerable, you kişi also do with an IQueryable. IEnumerable just has a GetEnumerator() method that returns an Enumerator for which you kişi call its MoveNext() method to iterate through a sequence of T

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.

Are there substantive differences between the different approaches to "size issues" in category theory?

And that might be useful and more efficient in certain C# IEnumerable Nedir cases. For example, your class might derece hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable gönül step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced C# IEnumerable Kullanımı in a foreach loop).

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Then you'll never have more than one line of the file in memory at a time, C# IEnumerable Nedir and if you finish the loop earlier (perhaps it was a search and you found what you needed) you C# IEnumerable Nedir might derece need to read the whole file. Or if you're reading the results from a large SQL query you kişi limit your memory use to a single C# IEnumerable Kullanımı record.

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