boxing and unboxing

For beginners, COM is not a very clear definition. It represents both a component specification and an implementation. In short, COM is a component model at the language layer, because different development environments often need to cooperate with

Hashtable indicates a set of Key/Value pairs. These Key/Value pairs are organized based on the hash code of the Key. The Key cannot be null, and the Value can be null, this is different from Hashmap (it is not thread-safe). For Hashtable, it

  1. What is reflection? 　　 An Assembly contains a module, and a module includes a type. There are members under the type. Reflection is the management assembly, module, and type object. It can dynamically create instances of the type, set the

Type conversions are divided into three types, one between value types, one between reference types, and the last is between value types and reference types.Conversion between value types is simple, usually a conversion of numbers. The difference

From msdn Structs differ from classes in several important ways: Structs are value types (section 11.3.1 ). All struct types implicitly inherit from the classSystem. valuetype(Section 11.3.2 ). Assignment to a variable of a struct

1. Boxing and unboxing in C ++/CLI Int ^ HI = 123;Int c = * Hi;2. Use C # functions with ref/out arguments in C ++/CLI If the argument is DOTNET value type, then directly create an instance of it on stack in C ++/CLI and pass it when calling the

A few days ago, the nullable type was suddenly used. Because it was rarely used, I forgot how to use it. I checked the relevant information and summarized it as follows (refer to msdn ). 1. The nullable type is a structure: system. nullable . The

Effectivec # describes some tips and experiences on using C # language. this series of articles is memorandum and some of your own opinions. programmers like this kind of problem most. Welcome to discuss it ~ Menu Item 1 replace public member

Release date: 2007.4.7 Author: anytao 2007 indicate the source of anytao.com.   This article introduces the following: • Type conversion • Is/as operator Discussion 1. Introduction  Type security is one of the key considerations at the

[You must know. Net] First: resentment: Is and Author: anytao     This article introduces the following: • Type conversion • Is/as operator Discussion 1. Introduction Type security is one of the key considerations at the beginning of.

I know little about Java, but the fully object-oriented technology makes development easier, which is beyond doubt .. NET development. Recently, I found it easier to use. Net to develop the interface, so I took a deep look at C # learning. Of course,

1. Generic) 1.1 description This enhances Java's type security. You can check the types of objects in the container during compilation, and do not need to convert the types at runtime. Before j2se5, you must dynamically check and convert objects in

The global class derived from httpapplication is useful for managing Application Status and Request status. The global. asax File Created by Visual Studio. Net generates a global class from the httpapplication class for each web application. This

C # (c-sharp) is Microsoft's new programming language and is hailed as "the first component-oriented language in the C/C ++ family ". However, no matter what it claims, many people think that C # is more like a Java clone, or Microsoft is used to

Since the introduction of generic in. NET Framework 2.0, the use of collections has created a new situation. First, we do not need to consider whether the type is secure. The use of generics and constraints on generic parameters can fully ensure

Generics in C # Generics are the most useful C #2.0 language extensions, beside anonymous methods, iterators, partial types and nullable types. What are generics?Generics permit classes, structs, interfaces,

In C # arrays, Arraylist,list can store a set of objects, so what is the difference between the three?ArrayArrays are first seen in C #. is stored continuously in memory, so its index is very fast, and the assignment and modification elements are

New features in Java8First, Lambda An expressionA lambda expression can be understood as an anonymous function that can be passed: it has no name, but the argument list, function body, return type, and possibly a list of exceptions that can be

One: Object type: the parent class of all types, through inheritance, subclasses have all the attributes and behaviors of the parent class, and any parent class can be substituted by subclasses;A way to do things that are done in multiple waysCommon

Content of this article Dynamically Typed Language (dynamic type language) Statically Typed Language (static type language) Comparison Resources The validation process performed by type checking, as well as the constraint