名詞解釋RTTI : Runtime Type Information, 意思是:運行時類型資訊。它提供了運行時確定物件類型的方法。 C 風格(C-style)強制轉型如下:(T) exdivssion // cast exdivssion to be of type T 函數風格(Function-style)強制轉型使用這樣的文法:T(exdivssion) // cast exdivssion to be of type
一、改變系統時間C#的System.DateTime類提供了對日期時間的封裝,用它進行時間的轉換和處理很方便,但是我沒有在其中找到任何可以用來修改系統時間的成員。用過VC、VB等的朋友可能知道,我們可以調用Win32 API SetLocalTime來改變系統時間,看來C#中也只能如此了。SetLocalTime需要一個SYSTEMTIME結構指標作為參數,這倒不難,我們可以“比葫蘆畫瓢”很快在C#中定義這個結構,但問題是,我同時還想“享受”.NET
Takeaway: Many dynamic applications allow third parties to create plugins that extend the functionality of the application. Zach Smith explains how developers can leverage the .NET Framework and C# to easily create a plugin architecture of their own.
Data abstraction and encapsulation:Encapsulation: conceiling of the implementationdetails of a data object from the outside world.Abstraction: theseperation between the specificationof a data object and its implementation.data type is a collection
[摘要]在分析病毒機理的基礎上,用C語言寫了一個小病毒作為執行個體,用TURBOC2.0實現. [Abstract] This paper introduce the charateristic of the computer virus,then show a simple example written by TURBOC2.0.一、什麼是病毒 惡意軟體可能是第一個對我們產生影響的電腦安全問題.所以病毒在資訊安全中是很重要的. 我們要對付病毒,就要瞭解病毒.
Sitemaps are XML files that web masters can create to let search engines know what what pages to index and how frequently to check for changes on each page. The XML format of the sitemap file is detailed on sitemaps.org. Here is a sample of a