• <ins id="pjuwb"></ins>
    <blockquote id="pjuwb"><pre id="pjuwb"></pre></blockquote>
    <noscript id="pjuwb"></noscript>
          <sup id="pjuwb"><pre id="pjuwb"></pre></sup>
            <dd id="pjuwb"></dd>
            <abbr id="pjuwb"></abbr>

            C++ Programmer's Cookbook

            {C++ 基礎(chǔ)} {C++ 高級(jí)} {C#界面,C++核心算法} {設(shè)計(jì)模式} {C#基礎(chǔ)}

            為什么要開(kāi)源!

            Introduction

            I bet that many of today's programmers have heard about Open Source, but don't want to use the principle in their programs. That's a shame, because it's a beautiful concept.

            I've tried to make the information in this article as brief as possible, so don't look weird at the many lists in this article. This is mostly information put together from various sources, just for usefulness. And, this is my first article and English is not my native language, so don't be too hard on me. Any comments (good or bad) and suggestions are always welcome!

            For those people who don't know what the Open Source concept is, here is a brief description.

            The idea behind Open Source

            The idea behind Open Source is that by giving the source of a program away, people can learn from it, improve it, extend it and fix bugs. The Open Source concept goes hand in hand with free software. Free like in freedom, not price.

            For example: Linux. Yes, Linux is Open Source too. Linus Torvalds developed the base of this operating system, and gave away the source. Currently, multiple major companies are working on their own Open Source versions of Linux (SuSE, Red Hat, Debian and Mandrake are some examples), and even many more people are working on it too. Thanks to this, bugs are fixed very fast (advanced programmers even fix bugs while using Linux), and functionality is extended.

            Your own protection

            When you give away the sourcecode of your very own program, how can you be sure that people won't steal it and say that it is their own? By using a license. A license protects your rights, and can help you in a lawsuit against anyone who infringe these rights. There are many licenses that may be used for Open Source programs. You can find them here. The two most widely used licenses are the GNU General Public License (GPL) and the GNU Lesser General Public License (LGPL). Here a short explanation of why these licenses are important:

            • People may copy your code under the same license.
            • People may modify and distribute the (modified) source code.
            • People can't say that they wrote your code (it's copyrighted or 'copyleft').
            • Patents may not make the program proprietary, so patents must be licensed for everyone's free use.
            • People can't change the license applied to the source code.

            The difference between the GNU General Public License (GPL) and the GNU Lesser General Public License (LGPL) is that the latter permits use of the source code in commercial programs, while the GPL does not.

            Why applying the license to your company's program(s)?

            If your boss agrees upon applying the GPL or LGPL to the company's program(s), then the company will have the following benefits:

            • Faster software development.

              Many people work on the same project.

            • Faster bug fixes.

              When a bug is found, there are many people available who can fix the bug in no-time!

            • More people will use the program.

              The program's sources are available, and people help develop the program. Through this, many more people will get to know about the program.

            • The wishes of the general community will be automatically integrated in the program.

              Because the general community develops the program, the program will be more likely to satisfy the general community.

            • Less development costs.

              People help developing, mostly for free.

            • Better beta testing.

              Many people use the program. People from beginners to experienced users.

            Implementing the GNU (Lesser) General Public License

            If you want to put your program and source code under the (L)GPL or any other license, then you'll have to put a short notice at the top of each source file. You will also have to include the license itself, and put a short notice in the documentation. You can use these steps for any license, but since the GPL is the most common used license, I'll discuss that here. Follow these steps:

            Source code files

            Add the following notice to the top of your source files, and change the information to suit your program:

            Copyright (C) [year] [name of author]
            
            This program is free software; you can redistribute it 
            and/or modify it under the terms of the GNU General Public 
            License as published by the Free Software Foundation; 
            either version 2 of the License, or (at your option) any 
            later version.
            This program is distributed in the hope that it will be 
            useful, but WITHOUT ANY WARRANTY; without even the implied 
            warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
            PURPOSE. See the GNU General Public License for more 
            details.
            You should have received a copy of the GNU General Public 
            License along with this program; if not, write to the Free 
            Software Foundation, Inc., 59 Temple Place, Suite 330, 
            Boston, MA 02111-1307 USA

            Also mention how you can be contacted by paper and electronic mail.

            Splash screen/About box

            On the program's splash screen, or if there is no splash screen used in the About box, put the following notice:

            [program name] version [versionnr.], Copyright (C) [year] [author's name]
            [program name] comes with ABSOLUTELY NO WARRANTY.

            And mention how the user can let the program show the license (or provide a 'License' button on the About box).

            You may also want to place the OSI-approved or Open Source logo on your splash screen/About box. You can find it here.

            License file

            You must add a file containing the full license you use to the files that accompany the source files and your program. Usually, this is a file named COPYING.

            Copyright disclaimer

            If you work for an employer or school, then you should let them sign a copyright disclaimer. The how and why of this disclaimer is explained at the end of the GPL.

            Open Source programs

            Here is a short and incomplete list of Open Source programs that might replace (expensive) programs.

            • Windows -> Linux.
            • InstallShield installers -> NSIS (Nullsoft Scriptable Install System).
            • Photoshop & Paint Shop Pro -> The Gimp.
            • Microsoft Office -> OpenOffice.
            • Filesharing -> E-mule and Shareaza.
            • .NET Framework -> Mono.
            • MSN Messenger & AIM & ICQ -> Gaim.

            Thousands of Open Source programs can be found at the following sites (among others):

            Discussions

            I write this update, now many months since I first wrote this article. Open Source has always been a point of discussion, and will always be. As it worked out, this article got the best votes and the worst votes, and the rating got stuck somewhere in the middle.

            There was one goal I wanted to achieve by writing this article, and I met that goal: to make people think about Open Source. Why Open Source? Figure that out by yourself. This article became part of the discussion, and I hope that this discussion will be continued for a long, long time...

            Links and resources

            You can find any useful links here:

            About Dani?l Pelsmaeker


            Dani?l is a student at the Hanzehogeschool in Groningen, Holland, where he studies Architecture.
            He knows too much about computers, and thanks to that, unfortunately, everyone keeps asking him for advice and cyberaid.

            A long, long time ago, in a galaxy far away... erhm. No!
            When he was little, he knew little about computers. He started learning about them by pulling the PC's plug from the socket, and his mother constantly lost all her work.
            Then, Commodore 64 programming started at the age of six:
            1: PRINT "Hello world!"
            2: GOTO 1

            From then, trough QBasic, Visual Basic 4, 5, 6 and now Visual Studio 2002 with C# and .NET.

            That was his history, in short.

            Click here to view Dani?l Pelsmaeker's online profile.

            posted on 2005-12-29 15:30 夢(mèng)在天涯 閱讀(691) 評(píng)論(0)  編輯 收藏 引用 所屬分類: Open source

            公告

            EMail:itech001#126.com

            導(dǎo)航

            統(tǒng)計(jì)

            • 隨筆 - 461
            • 文章 - 4
            • 評(píng)論 - 746
            • 引用 - 0

            常用鏈接

            隨筆分類

            隨筆檔案

            收藏夾

            Blogs

            c#(csharp)

            C++(cpp)

            Enlish

            Forums(bbs)

            My self

            Often go

            Useful Webs

            Xml/Uml/html

            搜索

            •  

            積分與排名

            • 積分 - 1807549
            • 排名 - 5

            最新評(píng)論

            閱讀排行榜

            国产精品久久久久天天影视| 午夜精品久久久久9999高清| 狠狠色婷婷久久一区二区| 久久精品国产AV一区二区三区| 久久精品国产久精国产果冻传媒| 性欧美大战久久久久久久久| 久久精品国产亚洲av高清漫画| 91精品久久久久久无码| 亚洲综合久久夜AV | 蜜臀av性久久久久蜜臀aⅴ麻豆| 国产精品天天影视久久综合网| 久久精品国产精品亚洲人人| 一本色道久久88—综合亚洲精品 | 91精品国产色综合久久| 国产精品毛片久久久久久久| 久久99久久成人免费播放| 亚洲乱码日产精品a级毛片久久| 久久久无码精品亚洲日韩按摩| 成人午夜精品久久久久久久小说| 欧美精品丝袜久久久中文字幕| 五月丁香综合激情六月久久| 久久久WWW成人免费毛片| 国产亚洲综合久久系列| 久久久精品波多野结衣| 国产∨亚洲V天堂无码久久久| 久久人妻少妇嫩草AV蜜桃| 国内精品久久久久影院网站| 久久ww精品w免费人成| 久久久久久久女国产乱让韩| 国产亚州精品女人久久久久久 | 久久国产精品成人影院| 一级做a爰片久久毛片免费陪| 久久久久久免费一区二区三区| 久久精品中文无码资源站| 久久精品国产精品亚洲人人| 91秦先生久久久久久久| 热re99久久精品国产99热| 999久久久无码国产精品| 久久水蜜桃亚洲av无码精品麻豆| 国产精品美女久久福利网站| 无夜精品久久久久久|