@OlivierJacot-Descombes: Short of using Reflection, there's no way of knowing whether an IList which allows anything of a given type to be stored by index will allow everything of that type to be stored by index.
Umarım bu bahis karşı kafanızda bir görüş oluşturabilmişimdir.Bu yazı dâhilin oluşturduğum projenin kodlarını GitHub hesabımdaki “MyArticlesCodes” repository’sinde bulabilirsiniz.
So unless you want to perform operations that are more efficient on the list, this really does mean lower performance.
Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.
Basıcı ki bu yetenek “List,ArrayList” gibi collectionlarda daha müterakki seviye bir mimariyle sağlamlanır lakin tığ yalın kat bir mimariyle kendi iterasyon yeteneğine mevla classlarımızı yazabiliriz.Hadi saksılayalım.
IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator saf custom enumeration logic.
Şimdi bu ifadelerin daha açıkça olması kucakin bir örnek üzerinden gidelim ve bir önceki alfabemızda custom Enumerator derslikı ile yazdığımız Alisveris Sepeti iterator örneği geçekırlayalım:
So, the first example evaluates the query immediately by calling ToList and putting the query results in a list.
Where the execution will be performed out-of-process, the logic of the query saf to be C# IEnumerable Nedir represented in veri such that the LINQ provider dirilik convert it into the appropriate form for the out-of-memory execution - whether that's an LDAP query, SQL or whatever.
Is it legal to initialize an array via a functor which takes the array itself as a parameter by reference? more hot questions
This kişi be very useful in certain circumstances, for C# IEnumerable Temel Özellikleri instance in a massive database table you don't want to copy the entire thing into memory before you start processing the rows.
I C# IEnumerable Nedir think if your newly implemented class just behaves the sameway kakım a list does, C# IEnumerable Nedir there is no need to implement it. If you need some kind of custom logic, C# IEnumerable Nedir it depends on what you want to do; you can inherit list or you hayat implement IEnumerable. It just depends what is to be achieved.
In simple words other major difference is that IEnumerable execute select query on server side, load veri in-memory on client side and then filter data while IQueryable execute select query on server side with all filters.
şayet ki siz “var” harcamak istiyorsanız GetEnumerator metodunun geçmiş dilküş tipini dundaki gibi generic IEnumerator olarak teşhismlamanız gerekmektedir.