C# IEnumerable Nedir Üzerinde Buzz söylenti

C# IEnumerable Nedir Üzerinde Buzz söylenti

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şayet milyonlarca kayıt üzerinde sorgulama işçiliklemi yapıyorsak elbette IQueryable IEnumerable nazaran daha hızlı sorgulama alışverişlemi yapar.

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other veri sources, use IQueryable

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IEqualityComparer kullanarak, özel gereksinimlere akla yatkın muta işleme stratejileri vüruttirebilir ve aplikasyon genelinde tutarlılık sağlayabilirsiniz.

I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? Ideal solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?

Basically it katışıksız 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.

The "inner" member does derece have "Animal" instances in it, but rather "Species" instances, which was very strange for me. The "outer" member does contain "Animal" instances. C# IStructuralComparable nedir I presume that the two delegates determine which goes in and what goes out of it?

IEnumerable gives you the way to implement your own logic of storing and iterating over object collection

Güç a unique position be deduced if pieces are C# IStructuralComparable nedir replaced by checkers (kişi see piece color but not type)

Are there substantive differences between the different C# IStructuralComparable nedir approaches to "size issues" in category theory?

Oh sure, you C# IStructuralComparable Kullanımı güç use it to create your own custom collection types. But for everyday stuff, it probably isn't as useful bey the collections derived from it.

Yukarıdaki hatada Calisan dershaneının bir GetEnumerator derunermediğini belirtiyor. Kısaca buradan da şu çızevcemı yapabiliriz;

Then you'll never have more than one line of the file in memory at a time, and if you finish the loop earlier (perhaps it was a search and you found what you needed) you might derece need to read the whole file. Or if you're reading the results from a large SQL query you yaşama limit your memory use to a single record.

When declaring a method’s parameter types, you should specify the weakest type possible, preferring interfaces over base classes. For example, if you are writing a method that manipulates a collection of items, it would be best to declare C# IStructuralComparable Kullanımı the method’s parameter by using an interface such as IEnumerable rather than using a strong veri type such kakım List or even a stronger interface type such kakım ICollection or IList: