Botz3000Botz3000 39.4k88 gold badges106106 silver badges128128 bronze badges 1 I believe this is was derece asked here so it birey be a comment derece an answer, but anyway makes sense from refactoring standpoint
In case of IEnumerable, only lines up to the element of interest will be read from the file. In case of ToList call over the enumerable, the entire file would be read before even starting the search.
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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.
Normalde bilirsiniz ki bir metod yekten aşkın return yapamaz lakin return'ün başına yield koyduğumuzda ne oluyorda yapabiliyor?
static public IEnumerable VerileriGetir() yield return "Pazartesi"; yield return "Salı"; yield return "Çarşamba"; yield return "Perşembe"; yield return "Cuma"; yield return "Cumartesi"; yield return "Pazar"; Şimdi adidaki şifre bloğunu ayrıntılıca inceleyelim.
So if I am going through all the items on ebay, one at a time would be something even a small computer güç handle, but ".ToList()" would surely run me out of memory, no matter how big my computer was. No computer can by itself contain and handle such a huge amount of data.
This way you have possibility to do many C# IEnumerable Nerelerde Kullanılıyor things with that query without touching the veri (in this case veri in the list). List method takes the prepared query and executes it against the source of veri.
What US checks and balances prevent the FBI from raiding politicians unfavorable to the federal government?
There are many cases (such kakım an infinite list C# IStructuralComparable nedir or a very large list) where IEnumerable cannot be transformed to a List. The most obvious C# IStructuralComparable Kullanımı examples are all the prime numbers, all the users of feysbuk with their details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" objects C# IStructuralComparable nedir work "just one at a time".
Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance input pin on an IC?
a reset on enumerators, but this is largely a design mistake and shouldn't be used (it is even a formal requirement in the spec that iterator blocks throw an exception if you call it).
IQueryable is faster than IEnumerable if we are dealing with huge amounts of data from database because,IQueryable gets only required data from database where kakım IEnumerable gets all the data regardless of the necessity from the database
Here is why it loads twice kakım fewer items C# IStructuralComparable Kullanımı as the first example on average. Let's say probability to find element at any position in the range of files is the same.