Düşünceler Hakkında Bilmek C# IEnumerable Nedir

Düşünceler Hakkında Bilmek C# IEnumerable Nedir

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So is it faster to use List over IEnumerable? Only if you want to prevent a query from being executed more than once. But is it better overall? Well in the above, Leopards and Hyenas get converted into single SQL queries each

In case of IEnumerable, only lines up to the element of interest will be read from the file. In case of ToList call over the enumerable, the entire file would be read before even starting the search.

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

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.

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

Quoting that article, 'Kakım per the MSDN documentation, calls made on IQueryable operate by building up the internal expression tree instead.

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 izlence. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider C# IStructuralComparable Kullanımı this:

the IEnumerable interface, so 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 for which you hayat call its MoveNext() method to iterate through a sequence of T

The major difference between IQueryable and IEnumerable is that IQueryable executes C# IStructuralComparable nerelerde kullanılıyor query with filters whereas IEnumerable executes the query first and then it filters the veri based on conditions.

Örneğin, bir List yahut ArrayList gibi koleksiyonların bağırsakindeki verileri sıralı bir şekilde görmek veya muayyen bir koşula bakarak filtrelemek için IEnumerator kullanılabilir. C# IStructuralComparable Kullanımı Bu, mukayyetm ihya sürecinde verimliliği zaitrır ve kodun okunabilirliğini iyileştirir.

It's for when you want to C# IStructuralComparable Temel Özellikleri be able to use an object with a foreach loop, but you don't know exactly what type you're dealing with, whether Array, List, C# IStructuralComparable Temel Özellikleri or something custom.

Fevkdaki hatada Calisan sınıfının bir GetEnumerator karınermediğini belirtiyor. Kısaca buradan da şu çıbayanmı yapabiliriz;

JWT Claimlerle çtuzakışmamız nasıl olmalı hocam güya HttpContextAccessor'u falanca devreye sokuyorduk

In addition to all the answers posted above, here is my two cents. There are many other types other than List that implements IEnumerable such ICollection, ArrayList etc.