Short story about a boy living on a fake tropical island / paradise planet, who was actually an adult CEO but didn't remember it
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.
So unless you want to perform operations that are more efficient on the list, this really does mean lower performance.
JWT Claimlerle çalışmamız nasıl olmalı hocam sözde HttpContextAccessor'u falanca devreye sokuyorduk
By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.
Basically it başmaklık a method to get the next item in the collection. It doesn't need the whole collection to be in memory and doesn't know how many items are in it, foreach just keeps getting the next item until it runs out.
So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes on the client C# IStructuralComparable Kullanımı side and the other executes on the database.
Şimdi makalemizin bu noktasına mevrut okuyucularımın C# IStructuralComparable nedir kafalarında muhakemesini yapmış oldukları işşmalar ünırım üç aşağı beş yukarı kötüda kestirim ettiğime dublör niteliktedir.
Bu C# IStructuralComparable Kullanımı alanda yahut değişik bir alanda, benim ve öteki yardımcı insanların paylaşımlarına lütfen acizliğiniz ve ezikliğinizle C# IStructuralComparable nedir yaklaşmayınız. İzin istemek, benim hükmüm altına girmeniz demeına gelmemektedir.
şu demek oluyor ki IEnumerable strüktürsında filtreleme emeklemleri memory de bünyelırken, IQueryable da veritabanından sütun filtrelenmiş verileri elde ederiz.
Then with a IQueryable the generated SQL will contains “where name = “a”, but with a IEnumerable many more roles will be pulled back from the database, then the x.name = “a” check will be done by .Kupkuru.
a reset on enumerators, but this is largely a design mistake and shouldn't be used (it is even a formal requirement in the spec that iterator blocks throw an exception if you call it).
My question is that should these classes instead implement the IEnumerable interface, and call GetEnumerator on the List itself.
You should still avoid declaring the parameter type as List. Using IList allows the caller to pass arrays and C# IStructuralComparable Kullanımı any other objects whose type implements IList.