使用一个通用的IEqualityComparer，它的工作是比较流程中涉及的示例的Name属性，这样做会容易得多。因此，...
not// reference identity, it is possible that two or more objects will produce the same// hash code.publicintGetHashCode(FileInfo fi){strings =$"{fi.Name}{fi.Length}";returns.GetHashCode(); } }publicstaticvoidCompareDirectories(){stringpathA ="""C:\Program Files\dotnet\sdk\...
not// reference identity, it is possible that two or more objects will produce the same// hash code.publicintGetHashCode(FileInfo fi){strings =$"{fi.Name}{fi.Length}";returns.GetHashCode(); } }publicstaticvoidCompareDirectories(){stringpathA ="""C:\Program F...
CountReturns the number of the items in a sequence as an int LongCountReturns the number of the items in a sequence as a long MinFinds the minimum number of a sequence of numbers MaxFinds the maximum number of a sequence of numbers ...
classChunk<TKey,TSource> :IGrouping<TKey,TSource> {// INVARIANT: DoneCopyingChunk == true ||// (predicate != null && predicate(enumerator.Current) && current.Value == enumerator.Current)// A Chunk has a linked list of ChunkItems, which represent the elements in the current chunk. Each...
Partial methods, first appearing in Chapter 8, Classes and Inheritance. Object initializers, demonstrated in Chapter 9, Functional Programming. Other new language and compiler features that must not have been important enough since they didn't get their own new cool-sounding names. Anonymous Types ...
.focus() not working .Net 4.0 Attributes.Add encoding bug .Net 4.5 Visual Studio 2012 and MySql connection 'DropDownList' has a SelectedValue which is invalid because it does not exist in the list of items. 'Globalization' is ambiguous while running on IIS but not at compile time in Visual...
Chapter 4. Exploring LINQ to Entities in Greater Depth 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....
) name, which will list all of its fields in the database. Also, all of the fields and the query results are strongly typed, which means you will get a compiling error instead of a runtime error if you miss spell the query statement or cast the query result to a wrong type. In ...
TheLINQCategoryincludes these books in it'sBooksproperty (and theC#categorydoes not): In our Book Catalog application, a book can only belong to a single category, so when we update the book's category, it should get automatically moved from theLINQcategory to theC#one. ...