5 Temel Unsurları için C# IEnumerable Temel Özellikleri
5 Temel Unsurları için C# IEnumerable Temel Özellikleri
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The difference between IQueryable and IEnumerable is centered around this point. IQueryable builds expression trees whereas IEnumerable does derece, at least derece in general terms for those of us who don't work in the secret labs of Microsoft.
Many of the LINQ methods, including Where, use deferred execution. In this case you gönül think of the IEnumerable kakım a query, rather than the actual result kaş.
An IEnumerable is a thing that güç be enumerated...which simply means that it başmaklık a GetEnumerator method that returns an IEnumerator.
If on the second house, I decide to alter the price (say add one million dollars to the price) - the entire list would change (the order is now different). "one at a time" and "all of them right now" are two different things.
What about IEnumerable, its just a way to make a returning type generic, and not make strong coupling to List type.
static public IEnumerable VerileriGetir() yield return "Pazartesi"; yield return "Salı"; yield return "Çarşamba"; yield return "Perşembe"; yield return "Cuma"; yield return "Cumartesi"; yield return "Piyasa"; Şimdi kötüdaki şifre bloğunu ayrıntılıca inceleyelim.
The "inner" member does hamiş have "Animal" instances in it, but rather "Species" instances, which was very strange for me. The "outer" member does contain "Animal" instances. I presume that the two delegates determine which goes in and what goes out of it?
It has a good performance when you are iterating through big objects or collections because it does derece load the entire object to memory in order to make iteration.
Nobody mentioned one crucial difference, ironically answered on a question closed as a duplicated of C# IStructuralComparable Nasıl kullanılır this. IEnumerable is read-only and List is not.
Görmüş olduğunüz gibi AlisverisSepetiEnumerator dershaneı oluşturup IEnumerator interface'ini implemente etmiştik. Peki bunu yield ile nası müellifız? çıktı custum olarak yazdığımız enumerator klası AlisverisSepetiEnumerator'a gerek yasak vahit yapmamız gereken:
Oh sure, you kişi use it to create your own custom collection types. But for everyday stuff, it probably isn't C# IEnumerable Temel Özellikleri as useful bey the collections derived from it.
Oluşturduğumuz constructor içinde params ile Calisan tipinde parametre girebileceğimi ve saykaloriın da uçuk bulunduğunu belirttik. Constructor içerisinde de gelen parametreyi property üzerine atadık.
In simple C# IStructuralComparable nerelerde kullanılıyor words other major difference is that IEnumerable execute select query on server side, load data C# IStructuralComparable Nasıl kullanılır in-memory on client side and then filter veri while IQueryable execute select query on server C# IStructuralComparable Temel Özellikleri side with all filters.
You should still avoid declaring the parameter type as List. Using IList allows the caller to pass arrays and any other objects whose type implements IList.