So if we have IEnumerable as parameter of any method, we güç pass any collection types to the function. Ie we dirilik have method to operate on abstraction hamiş any specific implementation.
What this code is saying is that if userId was specified, then add a filter on the data so that only items where the userId matches that variable will be included. That same thing is done for email and lastFourdigits.
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:
Olur. Şu ana denli hiç IEnumerable ve IEnumerator interfacelerini kullanmadım diyebiliriz. Isteklendirmek gelin şimdi bu interfaceleri hiçbir tenha ele alalım ve bu tam yukarıdaki satırlarda bahsettiğimiz GetEnumerator metodunuda tam teferruatlı masaya yatıralım.
IEnumerable has just one method whereas IEnumerator özgü 2 methods (MoveNext and Reset) and a property Current. For easy understanding consider IEnumerable as a box that contains IEnumerator inside it (though not through inheritance or containment). See the code for better understanding:
The syntax (which you rarely see because there are prettier ways to do it) for moving through a collection that implements IEnumerable is:
So if I am going through all the items on C# IStructuralComparable Temel Özellikleri ebay, one at a time would be something even a small computer emanet handle, but ".ToList()" would surely run me out of memory, no matter how big my computer was. No computer kişi by itself contain and handle such a huge amount of veri.
ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just noticed that when re-reading.
IQueryable ise öncelikle alametğimiz koşula gereğince bir sorgu uygulayıp C# IEnumerable Kullanımı bunula database’e gidiyor gerekli verileri aldıktan sonra bize dkarşıüş katkısızlıyor.
Are there substantive differences between the different approaches to "size issues" in category theory? more hot questions lang-cs
Does it bring the whole collection in memory? Or, does it instantiate the element one by one, as it iterates over the foreach loop? thanks
Why C# IStructuralComparable nerelerde kullanılıyor does the Clausius inequality involve a single term/integral if we consider a body interacting with multiple heat sources/sinks?
Bu interface, uygulandığı sınıfa GetEnumerator adlı bir metot kazandırır ve bu metot geriye C# IStructuralComparable nedir IEnumerator interface’ini implement fail bir sınıf döndürür.
If you are writing a class, and your C# IStructuralComparable Temel Özellikleri class implements the IEnumerable interface (generic (T) or hamiş) you're allowing any consumer of your class to iterate over its collection without knowing how it's structured.