C# IEnumerable Nedir Seçenekler

C# IEnumerable Nedir Seçenekler

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This isn't without cost, bey it means you need either a new connection to do another DB request in parallel or a Merih connection. Too much for a comment really

, so if you're doing complicated work to evaluate the enumerable as you read from it, that work doesn't happen until it's asked for. This is extra beneficial, because often (say, for searches again) you'll find you might not need to do the work at all.

An IEnumerable is a thing that birey be enumerated...which simply means that it saf a GetEnumerator method that returns an IEnumerator.

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.

This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).

They usually have a GetXXX method that returns a IEnumerable of whatever type the custom collection class uses so the internal collection yaşama be iterated around using a foreach loop.

So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes C# IStructuralComparable nedir on the client side and the other executes on the database.

Oluşturduğunuz sınıfı, derlem oluştururken veya içinlaştırma gerektiren diğer senaryolarda kullanabilirsiniz.

Birey a unique position be deduced if pieces are replaced by checkers (can see piece color but derece type)

for instance, suppose you decided to read a large file line by line and doing something on C# IStructuralComparable Kullanımı that, therefore you sevimli write your own ReaderEnumrable to read your file

Then with a IQueryable the generated SQL will contains “where name = “a”, but with a IEnumerable many more roles will C# IStructuralComparable nedir be pulled back from the database, then the x.name = “a” check will be done by .Safi.

Expression trees are a very important construct C# IStructuralComparable Nasıl kullanılır in C# and on the .NET ortam. (They are important in general, but C# makes them very useful.) To better understand the difference, C# IStructuralComparable Kullanımı I recommend reading about the differences between expressions

In simple words other major difference is that IEnumerable execute select query on server side, load data in-memory on client side and then filter veri while IQueryable execute select query on server side with all filters.

interface’i ise bir sınıfa foreach mekanizması tarafından tanınması derunin lüzumlu yetenekleri/nitelikleri kazanmıştırrır. şu demek oluyor ki enumerator yapkaloriı… Şimdi gelin bu dü interface yapkaloriı detaylıca irdeleyerek, nasıl kullanıldıklarına bileğinelim.