Detaylar, Kurgu ve C# IEnumerable Nerelerde Kullanılıyor

Detaylar, Kurgu ve C# IEnumerable Nerelerde Kullanılıyor

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Data temizışı ve LINQ sorguları: IEnumerable, Language Integrated Query (LINQ) sorgularında yaygın olarak kullanılır. LINQ, data koleksiyonları üzerinde sorgulama ve filtreleme kabil kârlemleri kolaylaştırır ve başarımı pozitifrır.

are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object as a runtime-traversable abstract syntax tree that can be understood by the given query provider (for the most part, you hayat't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).

I changed the names of my original objects so that this looks like a more generic example. The query itself is hamiş that important. What I want to ask is this:

There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable interface is useful when your collection is loaded using LINQ or Entity framework and you want to apply filter on the collection.

Although there are uses of IEnumerable other than "foreach", the olağan indication that one should implement IEnumerable is that the class is one where it would make sense to say "foreach foo in classItem foo.do_something(); .

I noticed that if I use "Distinct", the "inner" contains 6 items (this is incorrect kakım only 2 are Distinct), but the "outer" does contain the correct values. Again, probably the delegated methods determine this C# IEnumerable Nasıl Kullanılır but this is a bit more than I know about IEnumerable.

// but this throws an exception, because C# IEnumerable Nerelerde Kullanılıyor the pointer or link to the // database namely the DbContext called MyEntities no longer exists.

This way you have possibility to do many things with that query without touching the veri (in this case veri in the list). List method takes the prepared query and executes it against the source C# IEnumerable Nedir of data.

Where the execution of a query is going to be performed "in process", typically all that's required is the code (kakım code) to execute each part of the query.

Yani IEnumerable binasında filtreleme işlemlemleri memory de binalırken, IQueryable da veritabanından direk filtrelenmiş verileri elde ederiz.

This takes an IEnumerator factory function, which usually güç be provided very easily instead of the single IEnumerator instance (which yields wrong results after first iteration and breaks the semantics of IEnumerable). This avoids the issues marked by Marc Gravell and establishes full IEnumerable behavior.

ümit ederim bu yazgıdan sonrasında iki tipin niye, nerede ve nasıl kullanılması gerektiğine üzerine ehliyetli bilgiye malik olmuşsunuzdur.

My question is that should these classes instead implement the IEnumerable interface, and call GetEnumerator on the List itself.

By "functionally equivalent," I mean that's actually what the compiler turns the code into. You gönül't use foreach on C# IEnumerable Nerelerde Kullanılıyor baz C# IEnumerable Temel Özellikleri in this example unless