Özellikle Dictionary, HashSet gibi data bünyelarıyla yan yana kullanılarak özelleştirilmiş mukabillaştırmalar esenlar. Böylelikle, farklı bilgi tipleri yahut katışıkşık muhaliflaştırma kuralları mucip durumlarda kullanıcıevet suples sağlar. C# IEqualityComparer Temel Özellikleri ve Yararlanmaı
Koleksiyonlar Beyninde Gezinmeyi Sağlamlar: IEnumerable, koleksiyonlar ortada kolaylıkla gezinmenizi esenlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde iş yapabilirsiniz.
Umumi sıfır bir koleksiyon üzerinde görgüsüz bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.
Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.
I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? Ideal solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?
but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are
Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, C# IEnumerable Nedir if C# IEnumerable Nedir the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead
For small result sets this is C# IEnumerable Temel Özellikleri likely to be a single trip, for large ones you're sending a request for more rows from the results, but it doesn't re-run the entire query.
"These methods that extend IQueryable(Of T) do hamiş perform any querying directly. Instead, their functionality is to build an Expression object, which is an expression tree that represents the cumulative query. "'
There are pros and cons to both. If you call ToList, you may remove some mystery birli to when the query gets executed. If you stick to IEnumerable, you get the advantage that the program doesn't do any work until it's actually required.
Here is a very good article that details the differences between statement lambdas and expression lambdas and discusses the concepts of expression tress in greater depth: Revisiting C# delegates, C# IEnumerable Nerelerde Kullanılıyor expression trees, and lambda statements vs. lambda expressions.."
something is up with your image link, its not rendering in the post body for some reason codeproject.com/KB/cs/646361/WhatHowWhere.jpg
IQueryable is a very powerful feature that enables a variety of interesting deferred execution scenarios (like paging and composition based queries).
IEnumerable interface’i ile bir klas itere edilebilir hale getiriliyor, bu işlem içre GetEnumerator metodu sınıfa implement ediliyordu. C# IEnumerable Nasıl Kullanılır IEnumerator interface’i ise iterasyon özelliği kazanmıştırracak ve iterasyon işçilikleminde kullanılacak elemanları ve özellikleri barındırmaktadır.