2008 年 4月随笔档案 - 飞天舞者

B-Trees Concepts B-树介绍（都快忘了:))

摘要：1.about B-Tree Although most of the search trees are binary trees, there is a popular serach tree taht is not binary. this tree is known as a B-tree. 虽然大多数的查找树是二叉树，但是也存在不是二叉树的查找树。这种树就是B-树。简言之，B树是一种多... 阅读全文

posted @ 2008-04-28 17:41 飞天舞者阅读(793) 评论(0) 推荐(0) 编辑

Garbage Collection Mechnism concepts 垃圾回收机制简介

摘要：传统的垃圾回收机制 1.引用计数(reference counting，RC)算法 1960年以前，人们为胚胎中的LISP语言设计垃圾回收机制时，第一个想到的算法就是引用计数算法。拿餐巾纸的例子来说午餐时，为了把脑子里突然跳出来的设机灵感记下来，我从餐巾纸代中抽出一张餐巾纸，打算在上面画出系统构架的蓝图。按照“餐巾纸使用之引用计数版“的要求，画图之前，我必须事先在餐巾纸的一角写上... 阅读全文

posted @ 2008-04-28 16:15 飞天舞者阅读(439) 评论(1) 推荐(0) 编辑

Interface functionality&Importance接口的功能和重要性

摘要：Interface is a new great type in CLR. it's hard to represent just with words. we can describe the importance of interface using a sample as following shown. 在CLR中，interface 是一个非常重要的新的类型(C++中没有inte... 阅读全文

posted @ 2008-04-24 17:33 飞天舞者阅读(354) 评论(0) 推荐(0) 编辑

what's the differences between readonly & const in C# 在C#中readonly和const的区别

摘要：1. the similar feature 相似性 grammar: public const int x=100; public readonly int x; const variable and readonly variable can not be modified once they are initialized in run-time. Ho... 阅读全文

posted @ 2008-04-24 15:46 飞天舞者阅读(333) 评论(1) 推荐(0) 编辑

ILDASm.exe IL反编译器- a useful tool to look inside the module/dll construct.

摘要：1.module/all contructure 2 ILDASM.exe is a good tool to look inside the constructure. key in ildasm in command is just ok. the following is a snapshot for a dll file using ildasm looking in... 阅读全文

posted @ 2008-04-23 17:56 飞天舞者阅读(568) 评论(0) 推荐(0) 编辑

Assembly Essence-- 程序集深入探讨：程序集结构及部署

摘要：深入介绍了Assembly的内部机构，Assembly的两种部署方式等阅读全文

posted @ 2008-04-23 17:21 飞天舞者阅读(607) 评论(0) 推荐(0) 编辑

how to sign an assembly with a strong name & how to create a pair key怎样通过强名给程序集签名以及如何创建钥匙对？

摘要：什么是Strong name?怎样通过Strong name给Assembly进行digital signature? 阅读全文

posted @ 2008-04-23 16:40 飞天舞者阅读(1728) 评论(0) 推荐(0) 编辑

the Differences between abstract class & interface in C#接口和抽象类的区别

摘要：abstract class and interface in C# look like much, but sometimes they get the similiar use. However, there are still much differences between them. here we go. 抽象类和接口初看上去很象，但是还是有很多区别的。 a) I... 阅读全文

posted @ 2008-04-23 10:14 飞天舞者阅读(466) 评论(0) 推荐(0) 编辑

Data Contract of WCFWCF之数据协议

摘要：what is contract什么是数据协议 In the abstract, all the WCF provides for is the ability to host and expose native CLR types as servies, and the ability to consume services as native CLR interfaces and cl... 阅读全文

posted @ 2008-04-22 11:01 飞天舞者阅读(574) 评论(1) 推荐(0) 编辑

C#2.0中的泛型基础介绍

摘要：泛型简介泛型是C#2.0最为强大的特点之一。泛型使得我们定义类型安全（type-safe)的数据结构。因为我们可以重用数据处理的算法而无需关注数据的特定类型，从而提高开发效率和代码质量。从观念上讲，泛型类似欲C++中的模板，但是他们的实现和功能却有着很大的不同。泛型问题描述假设一种常用的数据结构，例如stack,他提供的经典method比如push和pop。当我们想要开发... 阅读全文

posted @ 2008-04-18 14:40 飞天舞者阅读(313) 评论(0) 推荐(0) 编辑

How to get MetaData on client side in WCF?如何在客户端获取WCF service的元数据

摘要：1.Why do we need to get the metadata on client side? Sometimes the client need to programmatically verify whether a particular endpoint (identified by its address) supports a particular contract/o... 阅读全文

posted @ 2008-04-18 10:15 飞天舞者阅读(409) 评论(0) 推荐(0) 编辑

Operation Overloading in WCF

摘要：1. Is operation overloading valid in WCF? overloading means that two methods with the same name but with different parameters. e.g., the following is a valid C# interface definiton: interface ... 阅读全文

posted @ 2008-04-17 16:52 飞天舞者阅读(253) 评论(0) 推荐(0) 编辑

Endpoint

摘要：What is Endpoint Every service is associated with an address that defines where the service is. a binding that defines how to communicate with the service, and a contract that defines what the ser... 阅读全文

posted @ 2008-04-17 10:07 飞天舞者阅读(389) 评论(0) 推荐(0) 编辑

Endpoint-Contracts

摘要：In WCF, all services expose constracts. The contract is a platform-neutral(平台无关的) and standard way of describing what the service does. WCF defines four types of contracts. Service contracts Desc... 阅读全文

posted @ 2008-04-16 11:27 飞天舞者阅读(287) 评论(0) 推荐(0) 编辑

Endpoint--Binding

摘要：1.What is Bindings? There are multiple aspects of communication with any given service. There are many possible communication patterns:synchronousely/asynchronousely, bidirectional(双向),durabl... 阅读全文

posted @ 2008-04-16 10:57 飞天舞者阅读(417) 评论(0) 推荐(0) 编辑

Endpoint--Address

摘要：What is WCF? Windows Communication Foundation(WCF) is an SDK for developing and deploying services on Windows. WCF provides a runtime environment for your services, enbabling you to expose CLR typ... 阅读全文

posted @ 2008-04-16 09:57 飞天舞者阅读(432) 评论(0) 推荐(0) 编辑

FAQ about AJAX-part II

摘要：About the script in my page:AJAX Asynchronous JavaScript and XML. Q: why do u create an http_request_check? what 's the use ? A: the object http_request_check is an object through which we s... 阅读全文

posted @ 2008-04-12 19:54 飞天舞者阅读(213) 评论(0) 推荐(0) 编辑

FAQ about AJAX-part I

摘要：Q: does AJAX use still use a request/response model? A: Actually, your pages are still making request and getting responses. you 'are using a different approach in how you make those requests and hand... 阅读全文

posted @ 2008-04-12 19:21 飞天舞者阅读(301) 评论(0) 推荐(0) 编辑

MSMQ&Com+ Service: How to create an Com+ Service in .NetFramework

摘要：1.create an library project named ComPlusService, and add references to System.EnterprisesServices & System.Messaging; 2.sample codes using System; using System.Collections.Generic; using System.Linq;... 阅读全文

posted @ 2008-04-09 17:10 飞天舞者阅读(260) 评论(0) 推荐(0) 编辑

MSMQ Basics- Transactional Messages Processing

摘要：1.Transactional message can be classified into internal transactional message and external transactional message i.internal message An internal transactional message si the simplest type o... 阅读全文

posted @ 2008-04-09 16:06 飞天舞者阅读(268) 评论(0) 推荐(0) 编辑

C/C++ Basics--function pointer

摘要：1.basic concepts function pointer in C/C++ is just like delegate in C#. we can use function pointer to point to a specific function, and then use function pointer to invoke the specified function.... 阅读全文

posted @ 2008-04-08 16:03 飞天舞者阅读(345) 评论(0) 推荐(0) 编辑

C/C++ Basic-- the differs between [malloc&free] and [new &delete]

摘要：1.basic concepts malloc&free and new&delete are all used to request memory allocation and release memory allocated from heap area. eg. malloc.h must be referenced when using malloc&free ... 阅读全文

posted @ 2008-04-08 15:05 飞天舞者阅读(297) 评论(0) 推荐(1) 编辑

C/C++ Basics-->about #define, const

摘要：1. In C programming, the normal use of #define is to declare an constant vairiable. But it's been replaced by const. C: #define X 100 ----> C++: const int x=100; 2. #define can also define ... 阅读全文

posted @ 2008-04-08 14:10 飞天舞者阅读(387) 评论(0) 推荐(0) 编辑

Thread Basics-- using Timer to trigger Event at a specified internals

摘要：1. what's timer Timer provides a mechanism for executing a method in at specified intervals. the hierarchy can be the following: System.Threading.timer; System.Timer.timer; System.Windows.form.timer; ... 阅读全文

posted @ 2008-04-07 12:19 飞天舞者阅读(292) 评论(0) 推荐(0) 编辑

Thread Basics(thread synchronization&Asynchronization) -part two

摘要：i.respective classes and interfaces related asychronouse invoking in .Net FrameWork. a) IAsycResult interface IAsyncResult stores relative asynchronouse invoking information,includi... 阅读全文

posted @ 2008-04-01 13:41 飞天舞者阅读(336) 评论(1) 推荐(0) 编辑

Tread Basics in C#-part one

摘要：1.Thread classification in .Net Framework (CLR [Common Language Runtime] Thread support) i.System.Threading.Thread; ii.System.Diagnostics.ProcessThread ( present an Operating system Th... 阅读全文

posted @ 2008-04-01 10:13 飞天舞者阅读(697) 评论(0) 推荐(0) 编辑

04 2008 档案