2 Dakika Kural için C# IEnumerable Kullanımı

2 Dakika Kural için C# IEnumerable Kullanımı

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So if we have IEnumerable birli parameter of any method, we hayat pass any collection types to the function. Ie we can have method to operate on abstraction not any specific implementation.

Projeyi yayınladıgınız hengâm user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.

Bey per other answers, the evaluation of the result was deferred until calling ToList or similar invocation methods for example ToArray.

For example, if you do not need to access items by index, but constantly insert items at the beginning of your collection and then remove items from the end, a Queue would be far more appropriate to use.

Normalde bilirsiniz ki bir metod takkadak aşkın return yapamaz lakin return'ün başına yield koyduğumuzda ne oluyorda yapabiliyor?

Quoting that article, 'Bey per the MSDN documentation, calls made on IQueryable operate by building up the internal expression tree instead.

While it might seem that only array types dirilik make use of this construct, the truth of the matter is

the IEnumerable interface, so anything you birey do with a "plain" IEnumerable, you can also do with C# IStructuralComparable Nasıl kullanılır an IQueryable. IEnumerable just saf a GetEnumerator() method that returns an Enumerator for which you C# IStructuralComparable Kullanımı can call its MoveNext() method to iterate through a sequence of T

Is it legal C# IStructuralComparable Nasıl kullanılır to initialize an array via a functor which takes the array itself birli a parameter by reference?

When you write a query using IEnumerable you are using the advantages of deferred execution and your query running when it accessed.

It's for when you want to be able to use an object with a foreach loop, but you don't know exactly what type you're dealing with, whether Array, List, or something custom.

The reason, of course, is that someone güç call the first method passing in an array object, a List object, a String object, and so on — any object whose type implements IEnumerable.

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 C# IStructuralComparable nerelerde kullanılıyor 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 can limit your memory use to a single record.

The first method advances to the next object in the IEnumerable object that C# IStructuralComparable nerelerde kullanılıyor created the enumerator, returning false if it's done, and the second returns the current object.