Büyülenme Hakkında C# IEnumerable Temel Özellikleri

Büyülenme Hakkında C# IEnumerable Temel Özellikleri

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[Edit] - Needless to say - it's not "either this or that". often it would make good sense to use both a list and an IEnumerable in the same class. No computer in the world could list all prime numbers, because by definition this would require an infinite amount of memory. But you could easily think of a class PrimeContainer which contains an IEnumerable primes, which for obvious reasons also contains a SortedList _primes.

I noticed that if I use IEnumerable, when I debug and inspect "yığın", which in that case is the IEnumerable, it başmaklık some interesting members: "inner", "outer", "innerKeySelector" and "outerKeySelector", these last 2 appear to be delegates.

This where filter is executed on the client side where the IEnumerable code is. In other words all the veri is fetched from the database and then at the client its scans and gets the record with EmpId is 2.

C# IEnumerable yararlanmaı epey basittir ve ekseriyetle koleksiyonlar üzerinde kârlemler gitmek ciğerin yeğleme edilir. İşte aşama etap nasıl kullanılacağına konusunda detaylı bir tafsil:

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 ?

So if you working with only in-memory veri collection IEnumerable is a good choice but if you want to query data collection which is connected with database `IQueryable is a better choice as it reduces network traffic and C# IStructuralComparable nedir uses the power of SQL language.

While it might seem that only array types gönül make use of this construct, the truth of the matter is

The constructor is not responsible for returning data to the caller. 2-We need to call a method that returns the cars array. That is in a real-world case, a method that returns an array should be coded in Garage and it should return an array, in which case, there would be no need to use IEnumerable.

Where the execution of a query is going to be performed "in process", typically all that's required is the code (bey code) to execute each part of the query.

Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 1 1 The mistake with "Reset" was with just having one type of enumerable. IMHO, there should have been an IMultipassEnumerable, inheriting IEnumerable, which would support Reset and guarantee that multiple passes will either return identical veri or throw an exception; an ordinary IEnumerable whose collection was modified should be allowed to return 'sensible' data if it's able to do so or throw an exception if it hayat't, and C# IStructuralComparable Temel Özellikleri an ISafeEnumerable, which would be expected to work sensibly (without throwing an exception) even if a collection changes. A bit late now to change things, though.

IEnumerable is refering to a collection but IQueryable is just a query and it will be generated inside a Expression Tree.we will run this query to get data from database. Share Follow

IEnumerable is an interface that tells us that we yaşama enumerate over a sequence C# IStructuralComparable Nasıl kullanılır of T instances. If you need to allow somebody to see and perform some action for each object in a collection, this is adequate.

Then you'll never have more than one line of the file C# IStructuralComparable Temel Özellikleri 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 C# IStructuralComparable nerelerde kullanılıyor reading the results from a large SQL query you sevimli limit your memory use to a single record.

You should still avoid declaring the parameter type bey List. Using IList allows the caller to pass arrays and any other objects whose type implements IList.