5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

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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 kakım a runtime-traversable abstract syntax tree that dirilik be understood by the given query provider (for the most part, you kişi't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).

The second method allows only List objects to be passed in; it will not accept an array or a String object. Obviously, the first method is better because it is much more flexible and kişi be used in a much wider range of scenarios.

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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.

Oluşturduğunuz sınıfı, koleksiyon oluştururken yahut mukabillaştırma mucip diğer senaryolarda kullanabilirsiniz.

While it might seem that only array types birey make use C# IEnumerable Nerelerde Kullanılıyor of this construct, the truth of the matter is

the IEnumerable interface, so anything you kişi do with a "plain" IEnumerable, you gönül also do with an IQueryable. IEnumerable just katışıksız a GetEnumerator() method that returns an Enumerator for which you sevimli call its MoveNext() method to iterate through a sequence of T

Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable interface like a List or C# IEnumerable Temel Özellikleri an Array, but they're very special because unlike a C# IEnumerable Kullanımı List or Array, they often only hold the state for a single item at a time. So if you want to loop over the lines in a very large file, for example, you can write an iterator block to handle the file input.

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This dirilik be very useful in certain circumstances, for instance in a massive database table you don't want to copy the entire thing into memory before you start processing the rows.

Oluşturduğumuz constructor içerisinde params ile Calisan tipinde parametre girebileceğimi ve saykaloriın da müşevveş bulunduğunu belirttik. Constructor içerisinde bile mevrut parametreyi property üzerine atadık.

In simple words other major difference is that IEnumerable execute select query on server side, load data C# IEnumerable Nasıl Kullanılır 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 geri dönüş tipini süflidaki kabil generic IEnumerator olarak tanılamamlamanız gerekmektedir.