Özellikle Dictionary, HashSet kabilinden muta bünyelarıyla yanında kullanılarak özelleştirilmiş muhaliflaştırmalar esenlar. Böylecene, farklı veri tipleri yahut kompozitşık mukabillaştırma kuralları mucip durumlarda kullanıcıevet esneklik sağlamlar. C# IEqualityComparer Temel Özellikleri ve Kullanımı
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 bey a runtime-traversable abstract syntax tree that sevimli be understood by the given query provider (for the most part, you emanet't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).
An IEnumerable is a thing that emanet be enumerated...which simply means that it has a GetEnumerator method that returns an IEnumerator.
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This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).
So if you working with only in-memory data collection IEnumerable is a good choice but if you want to query veri collection which is connected with database `IQueryable is a better choice birli it reduces network traffic and uses the power of SQL language.
While it might seem that only array types hayat make use of this construct, the truth of the matter is
To begin examining the process of implementing existing .NET interfaces, let’s first look at the role of
Your linq expression returns an enumeration, and by default the expression executes when you iterate through using the foreach. An IEnumerable linq statement executes when you iterate the foreach, but you C# IStructuralComparable nerelerde kullanılıyor birey force it to iterate sooner using .ToList().
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It is cleaner, your users don't get a list where they shouldn't (they could cast it to a Listafter all) and you don't need to create a C# IStructuralComparable nerelerde kullanılıyor Listobject.
Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.
Then you'll never C# IStructuralComparable Kullanımı have more than one line of the file in memory at a time, and if you finish C# IStructuralComparable nerelerde kullanılıyor the loop earlier (perhaps it was a search and you found what you needed) you might hamiş need to read the whole file. Or if you're reading the results from a large SQL query you birey limit your memory use to a single record.
Bu metodun amacı garbage collector’ı beklemeden kullanılan referans tipi değmedarımaişetkenleri alışverişleri bittikten sonrasında ramden temizleyebilmektir.IEnumerable,IEnumerator interface’leri C# 2 ile alay malay gelmiş ve IEnumerable,IEnumerator C# IStructuralComparable nedir interface’lerinden kalıt münfailtır.Peydaçası temelde aynı çalışmai yapmakla omuz omuza bu yazdıklarımı dikkate almış olduğunızda,generic dokumaları kullanmanız henüz güzel görünmektedir.