C# IEnumerable Nasıl Kullanılır Ile ilgili detaylı notlar

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If an airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count:

Down Below I took part of a code I was looking at. I don't understand the IEnumerable part of the Code. Gönül someone just walk me through the meaning of each line. Thanks

Projeyi yayınladıgınız devran user secrets kullanılmıyor. Bu yalnızca geliştirme aşamasında kullanılabilir.

JWT Claimlerle çkırmızıışmamız nasıl olmalı hocam âdeta HttpContextAccessor'u falanca devreye sokuyorduk

An Enumerable is a class that gönül give you Enumerators. It has a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.

So if you working with only in-memory data collection IEnumerable is a good choice but if you want to query veri collection which is connected with database `IQueryable is a better choice bey it reduces network traffic and uses the power of SQL language.

Velhasıl… Yaptığımız bu fiillemler neticesinde “Personeller” derslikımız, içerisinde bir “Personel” veri kümesi çitndıran ve bu data kümesi üzerinde itere edilebilir bir nitelik arz fail bir sınıf mahiyetindedir.

IEnumerable and IEnumerator are both interfaces. IEnumerable başmaklık just one method called GetEnumerator. This method returns (as all methods return something including void) another type which is an interface and that interface is IEnumerator. When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).

Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable interface like a List or an Array, C# IEnumerable Kullanımı but they're very special because unlike a List or Array, they often only hold the state for a single item at a time. So if you want to loop over the lines in a very large file, for example, C# IEnumerable Nedir you can write an iterator block to handle the file input.

When you write a query using IEnumerable you are C# IEnumerable Kullanımı using the advantages of deferred execution and your query running when it accessed.

Does it bring the whole collection in memory? Or, does it instantiate the element one by one, as it iterates over the foreach C# IEnumerable Temel Özellikleri loop? thanks

I think if your newly implemented class just behaves the sameway bey a list does, there is no need to implement it. If you need some kind of custom logic, it depends on what you want to do; you sevimli inherit list or you gönül implement IEnumerable. It just depends what is to be achieved.

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

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