C# IEnumerable Nedir Seçenekler

C# IEnumerable Nedir Seçenekler

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ArrayList: ArrayList dershaneı, kararsız boyutlu ve nesnelerin bir koleksiyonunu saklamak yürekin kullanılır ve IEnumerator ile elemanlarına ulaşım sağlamlanabilir.

Many of the LINQ methods, including Where, use deferred execution. In this case you güç think of the IEnumerable kakım a query, rather than the actual result set.

. If you need the results to be evaluated at once (say, you're mutating the structures you're querying later on, or if you don't want the iteration over the IEnumerable to take a long time) use a list.

If on the second house, I decide to alter the price (say add one million dollars to the price) - the entire list would change (the order is now different). "one at a time" and "all of them right now" are two different things.

Said in a very simple way, that any object implementing this interface will provide a way to get an enumerator. An enumerator is used with C# IEnumerable Nedir the foreach as one example.

What I do is make a class that implements both IEnumerator and IEnumerable. Make GetEnumerator() return itself and you yaşama iterate it like olağan.

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

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

So you have a common IEnumerator-implementing class for C# IEnumerable Nasıl Kullanılır all ten, and each collection just özgü to implement IEnumerable using that enumerating C# IEnumerable Kullanımı class. It's about separation of concerns, treating holding veri and enumerating data birli C# IEnumerable Nasıl Kullanılır separate operations.

Bu, mukayyetmın kalitesini pozitifrır ve olası hataları erken aşamalarda saptama etmeyi kolaylaştırır.

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.

IEnumerable enable implicit reference conversion for array types which known bey Covariance. Consider the following example:

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

Short story about a boy living on a fake tropical island / paradise planet, who was actually an adult CEO but didn't remember it