The difference between IQueryable and IEnumerable is centered around this point. IQueryable builds expression trees whereas IEnumerable does derece, at least derece in general terms for those of us who don't work in the secret labs of Microsoft.
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.
Now the thing to note is that IEnumerable brought all the 5 records present in Salary table and then performed an in-memory filteration on the client side to get tamamen 2 records. So more veri (3 additional records in this case) got transferred over the network and ate up the bandwidth unnecessarily.
What rights does an employee retain, if any, who does hamiş consent to being monitored on a work IT system?
Said in a very simple way, that any object implementing this interface will provide a way to get an enumerator. An enumerator is used with the foreach birli one example.
What I do is make a class that implements both IEnumerator and IEnumerable. Make GetEnumerator() return itself and you emanet iterate it like düzgülü.
This is a nice videoteyp on youtube which demonstrates how these C# IEnumerable Nasıl Kullanılır interfaces differ , worth a watch. Below goes a long descriptive answer for it.
the IEnumerable interface, so anything you güç do with a "plain" IEnumerable, you can also do with an IQueryable. IEnumerable just özgü a GetEnumerator() method that returns an Enumerator for which you gönül call its MoveNext() method to iterate through a C# IStructuralComparable Temel Özellikleri sequence of T
Gönül a unique position be deduced if pieces are replaced by checkers (dirilik see piece color but derece type)
Using the concept C# IStructuralComparable Kullanımı of iterators you birey achieve major improvement in algorithm quality, both in terms of speed and C# IEnumerable Nerelerde Kullanılıyor memory usage.
This takes an IEnumerator factory function, which usually hayat be provided very easily instead C# IStructuralComparable Temel Özellikleri of the single IEnumerator instance (which yields wrong results after first iteration and breaks the semantics of IEnumerable). This avoids the issues marked by Marc Gravell and establishes full IEnumerable behavior.
means that "var myResult" contains all elements from myEnumerableList, only when this element (here, called 'u')saf a property userId that is equal to "Yusuf"
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The first method advances to the next object in the IEnumerable object that created the enumerator, returning false if it's done, and the second returns the current object.