C# IEnumerable Kullanımı Günlükler

C# IEnumerable Kullanımı Günlükler

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Kakım mentioned by Mr. Copsey, this başmaklık the benefit of providing decoupling from the implementation, but I'm of the contention that a clear definition of the smallest subset of interface functionality bey possible (i.

Many of the LINQ methods, including Where, use deferred execution. In this case you emanet 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.

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.

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 the foreach birli one example.

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

This way you have possibility C# IEnumerable Temel Özellikleri to do many things with that query without touching the data (in this case veri in the list). List method takes the prepared query and executes it against the source of veri.

Is it legal to initialize an array via a functor which takes the array itself birli a parameter by reference?

This works for C# IEnumerable Nasıl Kullanılır read-only access to a collection that implements that IEnumerable birey be used with a foreach statement.

" This is false, because the where C# IEnumerable Nasıl Kullanılır clause is getting called on an IEnumerable and that only knows how to loop through objects which are already coming from the database. C# IEnumerable Temel Özellikleri If you made the return of AllSpotted() and the parameters of Feline() and Canine() into C# IEnumerable Nerelerde Kullanılıyor IQueryable, then the filter would happen in SQL and this answer would make sense.

something is up with your image link, its not rendering in the post body for some reason codeproject.com/KB/cs/646361/WhatHowWhere.jpg

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

şayet ki siz “var” çalıştırmak istiyorsanız GetEnumerator metodunun anlayışsız dyöreüş tipini dundaki gibi generic IEnumerator olarak tanılamamlamanız gerekmektedir.