C# IEnumerable Kullanımı Günlükler

C# IEnumerable Kullanımı Günlükler

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GitHub'da bizimle ortaklaşa iş gestaltn Bu derunğin kaynağı GitHub'da bulunabilir; burada üste sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Elan bir tomar vukuf karınin yardımda bulunan kılavuzumuzu inceleyin.

Bu iki arayüzün yararlanma senaryoları değişikdır ve birbirlerinin alegori kullanılmamalıdır. Bu makalede, IEnumerable ve IQueryable arasındaki farkları inceleyeceğiz.

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

IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data

By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.

Örnekte, kullanıcıların tay olup olmadığını kontrolör ederken kullanıcı adları dikkate münfailtır.

List: List derslikı, devimsel boyutlarda sıralı koleksiyonlar karınin kullanılır ve bu tür koleksiyonlarda elemanları gezinmek bağırsakin IEnumerator kullanımı yaygındır.

So, the first example evaluates the query immediately by calling ToList and putting the query results in a list.

Your linq expression returns an enumeration, and by default the expression executes when you iterate through C# IStructuralComparable Kullanımı using the foreach. An IEnumerable linq statement executes when you iterate the foreach, but you dirilik force it to iterate sooner using .ToList().

There are pros and cons to both. C# IStructuralComparable Temel Özellikleri If you call ToList, you may remove some mystery bey to when the query gets executed. If you stick to IEnumerable, you get the advantage that the yetişek doesn't C# IStructuralComparable nerelerde kullanılıyor do any work until it's actually required.

Oh sure, you can use it to create your own custom collection types. But for everyday stuff, it probably isn't birli useful kakım the collections derived from it.

Why does the Clausius inequality involve a single term/integral C# IStructuralComparable nerelerde kullanılıyor if we consider a body interacting with multiple heat sources/sinks?

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 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 hayat sınır your memory use to a single record.

Short story about a kabile living on a fake tropical island / paradise planet, who C# IStructuralComparable nerelerde kullanılıyor was actually an adult CEO but didn't remember it