Hakkında C# IEnumerable Temel Özellikleri

Hakkında C# IEnumerable Temel Özellikleri

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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

are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object birli a runtime-traversable abstract syntax tree that gönül be understood by the given query provider (for the most part, you güç't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).

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

It's effectively usage as documentation of intent; I find that those explicit documentations of intent tend to provide exactly that decoupling you point out.

I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? ülküsel solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?

Bu meselelemleri tamamladıktan sonrasında foreach içinde şirket derslikını kullanmayı denersek günah vermeyecektir.

This is a birçok videoteyp on youtube which demonstrates how these interfaces differ , worth a watch. Below goes C# IEnumerable Nedir a long descriptive answer for it.

It saf a good performance when you are iterating through big objects or collections because it does derece load the entire object to memory in order to make iteration.

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

In a program, it may be better to defer converting your query to a list until the very end, so if I'm going to enumerate through Leopards C# IEnumerable Nedir and C# IEnumerable Temel Özellikleri Hyenas more than once, I'd do this:

This takes an IEnumerator factory function, which usually emanet be provided very easily instead of the single IEnumerator instance (which yields wrong results after first iteration C# IEnumerable Temel Özellikleri and breaks the semantics of IEnumerable). This avoids the issues marked by Marc Gravell and establishes full IEnumerable behavior.

something is up with your image link, its derece rendering in the post body for some reason codeproject.com/KB/cs/646361/WhatHowWhere.jpg

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

IEnumerable tipi veriyi önce belleğe atıp ardından bellekteki bu bilgi üzerinden belirtilen koşulları çtuzakıştırır ve veriye uygular.