2 Dakika Kural için C# IEnumerable Temel Özellikleri

2 Dakika Kural için C# IEnumerable Temel Özellikleri

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, and the database only returns the rows that are relevant. But if we had returned a List from AllSpotted(), then it may run slower because the database could return far more data than is actually needed, and we waste cycles doing the filtering in the client.

What this code is saying is that if userId was specified, then add a filter on the data so that only items where the userId matches that variable will be included. That same thing is done for email and lastFourdigits.

The second example returns an IEnumerable that contains all the information needed to run the query later on.

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Although there are uses of IEnumerable other than "foreach", the olağan indication that one should implement IEnumerable is that the class is one where it would make sense to say "foreach foo in classItem foo.do_something(); .

B. IEnumerator emanet remember the current index when we pass from one method to another (it start working with current index) but IEnumerable emanet't remember the index and it reset the index to beginning. More in this videoteyp

While it might seem that only array types kişi make use of this construct, the truth of the matter C# IStructuralComparable Nasıl kullanılır is

What US checks and balances prevent the FBI from raiding politicians unfavorable to the federal government?

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Any idea why the Enumerable is "split" C# IStructuralComparable Temel Özellikleri into "inner" and "outer"? This happens when I inspect the element in debug/break mode via mouse. Is this perhaps Visual Studio's contribution? Enumerating on the peşin and indicating input and output of the Enum?

I think if your newly implemented class just behaves the sameway as a list does, there is no need to implement it. If C# IStructuralComparable nedir you need some kind of custom logic, C# IStructuralComparable nerelerde kullanılıyor it depends on what you want to do; you birey inherit list or you hayat implement IEnumerable. It just depends what is to be achieved.

IQueryable C# IStructuralComparable nerelerde kullanılıyor is faster than IEnumerable if we are dealing with huge amounts of veri from database because,IQueryable gets only required veri from database where birli IEnumerable gets all the veri regardless of the necessity from the database

If you are writing a class, and your class implements the IEnumerable interface (generic (T) or hamiş) you're allowing any consumer of your class to iterate over its collection without knowing how it's structured.