C# IEnumerable Nasıl Kullanılır Aptallar için

C# IEnumerable Nasıl Kullanılır Aptallar için

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This isn't without cost, kakım it means you need either a new connection to do another DB request in parallel or a MARS connection. Too much for a comment really

Down Below I took part of a code I was looking at. I don't understand the IEnumerable part of the Code. Gönül someone just walk me through the meaning of each line. Thanks

I understand why IQueryable is better choice for "out-of-memory" data but I am struggling to understand why IEnumerable is better for "in-memory" veri? I still think it's better to get filtered data than to get get veri and apply filter.

For example, if you do derece 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.

An Enumerable is a class that gönül give you Enumerators. It başmaklık a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.

Oluşturduğunuz dershaneı, derme oluştururken yahut muhaliflaştırma gerektiren özge senaryolarda kullanabilirsiniz.

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

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

Nobody mentioned one crucial difference, ironically answered on a question closed as a duplicated of this. IEnumerable is read-only and List is not.

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

This takes an IEnumerator factory function, which usually hayat 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.

means that "var C# IEnumerable Nerelerde Kullanılıyor myResult" contains all elements from myEnumerableList, only when this element (here, called 'u')özgü a property userId that is equal to "Yusuf"

In simple words other major difference is that IEnumerable execute select C# IEnumerable Nasıl Kullanılır query on server side, load veri in-memory on client side and then filter veri while C# IEnumerable Nerelerde Kullanılıyor IQueryable execute select query on server side with all filters.

Here is why it loads twice as C# IEnumerable Nasıl Kullanılır fewer items birli the first example on average. Let's say probability to find element at any position in the range of files is the same.