Because equality as defined here is a simple value equality, not // reference identity, it is possible that two or more objects will produce the same // hash code. public int GetHashCode(FileInfo fi) { string s = $"{fi.Name}{fi.Length}"; return s.GetHashCode(); } } ...
"LINQ to Objects" refers to the use of LINQ queries with anyIEnumerableorIEnumerable<T>collection directly. You can use LINQ to query any enumerable collections, such asList<T>,Array, orDictionary<TKey,TValue>. The collection can be user-defined or a type returned by a .NET API. In the...
If they contain the same type and are of the same length, the Enumerable.SequenceEqual method compares each item using the specified comparer. Figure 7 demonstrates both ways of calling the Enumerable.SequenceEqual method. In both cases, the return value is False....
(enumerator.Current);// The end and beginning are the same until the list contains > 1 elements.tail = head; m_Lock =newobject(); }// Indicates that all chunk elements have been copied to the list of ChunkItems.privateboolDoneCopyingChunk => tail ==null;// Adds one ChunkItem to ...
All Returns a value True if all elements of a sequence satisfy a predicate condition Not Applicable Aggregate In Into All() Any Determines by searching a sequence that whether any element of the same satisfy a specified condition Not Applicable Aggregate In Into Any() Contains Returns a True va...
Returns a count of records with True expression results. To return a count of all records in a query, use Count(True). LongCount Same as Count, but returns a Long instead of an Integer. Max Returns the maximum numeric expression from the set of records. Min Returns the minimum numeric ...
In the example above, variable value is of an anonymous type whose definition is equivalent to the following pseudo-C#: Copy internal class ??? { string _Name; int _Age; bool _CanCode; public string Name { get { return _Name; } set { _Name = value; } } public int Age{ get {...
Run-length encodes a sequence by converting consecutive instances of the same element into a KeyValuePair<T, int> representing the item and its occurrence count.This method has 2 overloads.ScanPeforms a scan (inclusive prefix sum) on a sequence of elements.This method has 2 overloads....
We override that so that if the Name is the same for each Employee, the hash code and the equals value will both correctly identify the instances as the same. There are also overloads for the set operators that take a custom comparer, which would also allow you to make this ...
In Chapter 3, you wrote the same basic query over and over and over again. I hope you’ll agree that this was a great way to get exposure to the many different ways of writing queries against the Entity Data Model. There is a lot more to querying an EDM, however. You’ll need to...