C# IList Nasıl Kullanılır Herkes İçin Eğlenceli Olabilir

C# IList Nasıl Kullanılır Herkes İçin Eğlenceli Olabilir

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"Are there any simple groups that appear bey zeros of the zeta function?" by Peter Freyd; why is this consternating to mathematicians?

Same principle birli before, reversed. Offer the bare asgari that your caller requires. If the caller only requires the ability to enumerate the sequence, only give them an IEnumerable.

Here's an example: I had a project once where our lists got very large, and resulting fragmentation of the large object heap was hurting performance. We replaced List with LinkedList. LinkedList does not contain an array, so all of a sudden, we had almost no use of the large object heap.

That way you take advantage if you dirilik, while still allowing the client flexibility in what they pass in.

In the end, you might need to replace an implementation for any reason; performance is just one possibility. Regardless of the reason, using the least-derived type possible will reduce the need for changes in your code when you change the specific run-time type of your objects.

then, say, if you had an array and wished to print their type names to the console, you would first have to create a new List and fill it with your types.

use LINQ to perform the conversion of your existing List when you return it - but it would be better to just create a more appropriate type to start with, kakım shown C# IList Kullanımı above.

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For collections you should aim to use IEnumerable where possible. This gives the most flexibility but is C# IList Neden Kullanmalıyız hamiş always suited.

The Cast function is just a reimplementation of the extension method that comes with 3.5 written as a alışılagelen static method. It is quite ugly and verbose unfortunately.

Of course that only need apply C# IList Kullanımı to methods that are externally visible (i.e. public methods). I personally use interfaces even in internal code, but bey you are able to change all the code yourself if you make breaking changes it's derece strictly necessary.

Is IList a good fit for C# IList Nerelerde Kullanılıyor your organisation? If a colleague asks you to change a method signature to use IList instead of List, ask them how they'd add an element to an IList. If they don't know about C# IList Neden Kullanmalıyız IsReadOnly (and most people don't), then don't use IList. Ever.

This will help if you decide to change the implementation of your class later to use a different concrete class. In that case the users of your library won't need to update their code since the interface doesn't change.

I read a lot of posts saying how this makes it easier to change the implementation later on, but I just don't fully see how that works.