Being somewhat lazy about implementing lots of IEqualityComparers, and given that I couldn't easily edit class implementations of object being compared, I went with the following, meant to be used with Distinct() and Except() extension methods. : public class GenericEqualityComparer<T> : IEqualityComparer<T> { Func<T, T, bool> compareFunction; Func<T, int> ha
对于实现大量的IEqualityComparers有些懒惰，并且由于我无法轻松编辑正在比较的对象的类实现，所以我采用以下方法，旨在与Distinct（）和Except（）扩展方法一起使用。 ： public class GenericEqualityComparer<T> : IEqualityComparer<T> { Func<T, T, bool> compareFunction; Func<T, int> hashFunction; public GenericEqualityComparer(Func<T, T, bool> compareFunction, Fun
I simply want to remove duplicates from two lists and combine them into one list. I also need to be able to define what a duplicate is. I define a duplicate by the ColumnIndex property, if they are the same, they are duplicates. Here is the approach I took: I found a nifty example of how to write inline comparers for the random occassions where you need em only once in a code segment. publi
我只是想从两个列表中删除重复项并将它们组合成一个列表。 我还需要能够定义什么是重复的。 我通过ColumnIndex属性定义了一个重复项，如果它们相同，它们是重复的。 这是我采取的方法： 我发现了一个很好的例子，说明如何为随机事件编写内联比较器，而在代码段中只需要em一次。 public class InlineComparer<T> : IEqualityComparer<T> { private readonly Func<T, T, bool> getEquals; private
So .NET 3.0/3.5 provides us with lots of new ways to query, sort, and manipulate data, thanks to all the neat functions supplied with LINQ. Sometimes, I need to compare user-defined types that don't have a built-in comparison operator. In many cases, the comparison is really simple -- something like foo1.key ?= foo2.key. Rather than creating a new IEqualityComparer for the type, can I simp
因此.NET 3.0 / 3.5为我们提供了许多新的查询，排序和操作数据的方法，这要归功于LINQ提供的所有整齐的函数。 有时，我需要比较没有内置比较运算符的用户定义类型。 在很多情况下，比较非常简单 - 例如foo1.key？= foo2.key。 我可以使用匿名代理/ lambda函数简单地指定内联比较，而不是为类型创建新的IEqualityComparer吗？ 就像是： var f1 = ..., f2 = ...; var f3 = f1.Except( f2, new IEqualityCompare
In my application I have Lecturers and they have list of Courses they can teach and when I'm deleting a course I want to remove connection to lecturers. Here's the code: public void RemoveCourse(int courseId) { using (var db = new AcademicTimetableDbContext()) { var courseFromDb = db.Courses.Find(courseId); var toRemove = db.Lecturers .Wh
在我的应用程序中，我有讲师，他们有他们可以教的课程列表，当我删除课程时，我想删除与讲师的连接。 代码如下： public void RemoveCourse(int courseId) { using (var db = new AcademicTimetableDbContext()) { var courseFromDb = db.Courses.Find(courseId); var toRemove = db.Lecturers .Where(l => l.Courses.Contains(courseFromDb)).ToList(); foreach
int number = new int(); Questions: For reference types, the new operator creates an instance of the type by allocating memory on the heap then initializes it by calling the type's constructor. As seen above, you could do the same for a value type. To me, the line above means that the constructor int() is called to initialize number with a value. I have read that int is a keyword pointi
int number = new int（）; 问题： 对于引用类型，new运算符通过在堆上分配内存来创建该类型的实例，然后通过调用该类型的构造函数来初始化它。 如上所示，您可以对值类型执行相同的操作。 对我来说，上面的这一行意味着构造函数int（）被调用来初始化数值。 我读过int是一个指向struct System.Int32的关键字。 因此，在Visual Studio中，我导航到结构Int32。 瞧，没有构造函数存在。 没有构造函数，这个预定义类型究
I have to say I was pleased when I opened up c# to see the integer data types being Int16,Int32 and Int64 . It removed any ambiguity eg int increasing in size with age. What surprises me is why there isn't or doesn't seem to be Float16,Float32 and Float64 or atleast not in normal use: a quick search of MSDN refers to float64 as R8 (unmanaged type) isn't this the same as a double
我不得不说，当我打开c＃查看整型数据类型为Int16,Int32 and Int64时，我很高兴。 它消除了任何模糊性，例如int随着年龄的增长而增大。 令我惊讶的是，为什么没有或似乎不是Float16,Float32 and Float64或者至少没有正常使用：MSDN的快速搜索指的是float64，因为R8（非托管类型）与这不是一样的双 我的猜测是，单倍和双倍（或者甚至是Extended（Float80））中不存在的含糊不清的东西，就我所知，我不确定这是怎么被整理的。
Possible Duplicates: typedef in C#? STL like containter typedef shortcut? I was wondering if there was an equivalent to Type aliasing from Functional Languages that I can use in C# For example in a nice functional language like Haskell I can say something like the following to alias an existing type to a custom Type Name type MyCustomTypeName = String I'd like to do this as I have a
可能重复： 在C＃中的typedef？ STL就像包含typedef的快捷方式？ 我想知道是否有相当于功能语言的类型别名，我可以在C＃中使用 例如，像Haskell这样的功能良好的语言，我可以像下面这样将现有类型别名为自定义类型名称 type MyCustomTypeName = String 我希望这样做，因为我有一个API，我正在使用的某些对象具有多个可能的名称，因为它们可以通过几个可互换和等效的术语来引用。 据推测，我可以用继承来做到这一点，
Using ASP.NET MVC's default view engine, you can declare a server-side comment like this: <%-- This is a comment --%> This comment will only be visible on the server side and is not sent to the client. How would I do the same with the Razor view engine? Start the comment block with @* , end the comment block with *@ . Similar to C# ( /* and */ ) @* single line comment *@ or @*
使用ASP.NET MVC的默认视图引擎，你可以像这样声明一个服务器端注释： <%-- This is a comment --%> 此评论只会在服务器端显示，并且不会发送给客户端。 我将如何对Razor视图引擎进行相同操作？ 用@*开始注释块，用*@结束注释块。 类似于C＃（ /*和*/ ） @* single line comment *@ 要么 @* this is a comment this is another *@ 更多关于剃刀在顾客博客上的评论。
I've this method, where I get files from my last commit: static void GetFiles(Tree t, String dir = "") { foreach (TreeEntry treeEntry in t) { if (treeEntry.TargetType == TreeEntryTargetType.Tree) { Tree tr = repo.Lookup<Tree>(treeEntry.Target.Sha); GetFiles(tr, dir + "/" + treeEntry.Name); } else { stri
我有这种方法，我从上次提交中获取文件： static void GetFiles(Tree t, String dir = "") { foreach (TreeEntry treeEntry in t) { if (treeEntry.TargetType == TreeEntryTargetType.Tree) { Tree tr = repo.Lookup<Tree>(treeEntry.Target.Sha); GetFiles(tr, dir + "/" + treeEntry.Name); } else { string caminho = dir + "/"
I am trying to convert a C# Dependency Property that limits the maximum length of text entered into a ComboBox to F#. The program is a MVVM program that uses F# for the model and viewmodel, and C# for the view. the working C# code is this: public class myComboBoxProperties { public static int GetMaxLength(DependencyObject obj) { return (int)obj.GetValue(MaxLengt
我试图转换一个C＃依赖属性，将输入到ComboBox的文本的最大长度限制为F＃。 该程序是一个MVVM程序，它使用F＃作为模型和视图模型，C＃作为视图。 工作的C＃代码是这样的： public class myComboBoxProperties { public static int GetMaxLength(DependencyObject obj) { return (int)obj.GetValue(MaxLengthProperty); } public static void SetMaxLength(DependencyObject