blocks|key|1736258|text|您只需阅读Boost+Background+Information页面，就可以快速了解应该使用Boost的原因以及使用它的目的。值得花几分钟的时间。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1736259|entityMap|0|LINK|mutability|MUTABLE|url|http://www.boost.org/users/^0|5|S|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You can simply read the <a href="http://www.boost.org/users/" rel="noreferrer">Boost Background Information</a> page to get a quick overview of why you should use Boost and what you can use it for. Worth the few minutes it takes.

blocks|key|1736528|text|99%25便携。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1736529|我想说的是，它有相当多的库，一旦你发现boost解决了一个需求，这些库就会非常有用。你可以自己编写代码，也可以使用非常可靠的库。拥有像多索引，Lambda，程序选项，RegEx，SmartPtr和元组这样的东西的货架源码是令人惊讶的……|1736530|最好的做法是花一些时间浏览不同库的文档，并评估它是否对您有用。|1736531|值得！！|1736532|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

99% portable. 

I would say that it has quite a few libraries that are really useful once you discover a need that is solved by boost. Either you code it yourself or you use a very solid library. 
Having off the shelve source for stuff like Multi-Index, Lambda, Program Options, RegEx, SmartPtr and Tuple is amazing... 

The best thing is to spend some time going through the documentation for the different libraries and evaluating whether it could be of any use to you. 

Worthy!!

blocks|key|1736095|text|你会得到很多C%2B%2B0x中即将出现的东西。但是除了这个通用性之外，一些更好的细节是一个简单的regex+library，一个用于casting+from+strings+to+ints+(词法转换)的模型库：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1736096|int+iResult+=+0;
try
{
++++iResult+=+lexical_cast<int>("4");
}
catch(bad_lexical_cast+&)
{
++++cout+<<+"Unable+to+cast+string+to+int";
}|code-block|syntax|javascript|1736097|一个date/time+library，还有其他的.|1736098|using+namespace+boost::gregorian;
date+weekstart(2002,Feb,1);
date+thursday_next+=+next_weekday(weekstart,+Thursday);+//+following+Thursday|1736099|还有一个Python+interface+(Boost+Python)，一个lexer/parser+DSL+(Boost精灵)：|1736100|//+A+grammar+in+C%2B%2B+for+equations
group+++++++=+'('+>>+expression+>>+')';
factor++++++=+integer+%7C+group;
term++++++++=+factor+>>+*(('*'+>>+factor)+%7C+('/'+>>+factor));
expression++=+term+>>+*(('%2B'+>>+term)+%7C+('-'+>>+term));|1736101|而这只是触及了皮毛...|1736102|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/130186/ie-textrange-select-method-not-working-properly|1|http://www.boost.org/doc/libs/1_36_0/libs/conversion/lexical_cast.htm|2|http://www.boost.org/doc/libs/1_36_0/doc/html/date_time.html|3|http://www.boost.org/doc/libs/1_36_0/libs/python/doc/index.html|4|http://spirit.sourceforge.net/^0|19|D|0|1R|S|1|0|0|2|H|2|0|0|4|G|3|12|G|4|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@$A|19|B|1A|1|1B]|$A|1C|B|1D|1|1E]]|C|$]]|$1|D|3|E|5|F|7|1F|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|1G|8|@]|9|@$A|1H|B|1I|1|1J]]|C|$]]|$1|K|3|L|5|F|7|1K|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|1L|8|@]|9|@$A|1M|B|1N|1|1O]|$A|1P|B|1Q|1|1R]]|C|$]]|$1|O|3|P|5|F|7|1S|8|@]|9|@]|C|$G|H]]|$1|Q|3|R|5|6|7|1T|8|@]|9|@]|C|$]]|$1|S|3|-4|5|6|7|1U|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]|12|$5|V|W|X|C|$Y|13]]|14|$5|V|W|X|C|$Y|15]]|16|$5|V|W|X|C|$Y|17]]]]

You get a lot of the things that are coming in C++0x. But aside from that generality, some of the better specifics are a simple <a href="https://stackoverflow.com/questions/130186/ie-textrange-select-method-not-working-properly">regex library</a>, a casting library for <a href="http://www.boost.org/doc/libs/1_36_0/libs/conversion/lexical_cast.htm" rel="nofollow noreferrer">casting from strings to ints</a> (Lexical cast):

<pre><code>int iResult = 0;
try
{
 iResult = lexical_cast&lt;int&gt;("4");
}
catch(bad_lexical_cast &amp;)
{
 cout &lt;&lt; "Unable to cast string to int";
}
</code></pre>

A <a href="http://www.boost.org/doc/libs/1_36_0/doc/html/date_time.html" rel="nofollow noreferrer">date/time library</a>, among others...

<pre><code>using namespace boost::gregorian;
date weekstart(2002,Feb,1);
date thursday_next = next_weekday(weekstart, Thursday); // following Thursday
</code></pre>

There's also a <a href="http://www.boost.org/doc/libs/1_36_0/libs/python/doc/index.html" rel="nofollow noreferrer">Python interface</a> (Boost Python), a <a href="http://spirit.sourceforge.net/" rel="nofollow noreferrer">lexer/parser DSL</a> (Boost Spirit):

<pre><code>// A grammar in C++ for equations
group = '(' &gt;&gt; expression &gt;&gt; ')';
factor = integer | group;
term = factor &gt;&gt; *(('*' &gt;&gt; factor) | ('/' &gt;&gt; factor));
expression = term &gt;&gt; *(('+' &gt;&gt; term) | ('-' &gt;&gt; term));
</code></pre>

and that's just scratching the surface...

blocks|key|1736062|text|Boost是C%2B%2B库的集合。其中10个被包括在C%2B%2B0x的tr1中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1736063|你可以使用get+started+with+boost+here。|offset|length|1736064|entityMap|0|LINK|mutability|MUTABLE|url|http://www.boost.org/users/index.html^0|0|5|R|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Boost is a collection of C++ libraries. 10 of which are being included in tr1 of C++0x.

You can <a href="http://www.boost.org/users/index.html" rel="noreferrer">get started with boost here</a>.

blocks|key|1736294|text|Boost是一个高质量的同行评审的C%2B%2B库的集合，强调可移植性和正确性。它充当了语言和标准库中新添加内容的实际验证基础。请查看他们的网站了解更多详细信息。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1736295|entityMap|0|LINK|mutability|MUTABLE|url|http://www.boost.org/^0|0|5|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://www.boost.org/" rel="noreferrer">Boost</a> is a collection of high quality peer reviewed C++ libraries that place emphasis on portability and correctness. It acts as the defacto proving grounds for new additions to the language and the standard library. Check out their website for more details.

blocks|key|1736437|text|Boost的优点:它广泛可用，可以移植到任何现代C%2B%2B编译器或任何平台上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1736438|这些函数是独立于平台的，你不必为每个新框架学习新的线程设计。|1736439|它封装了许多平台特定的功能，比如以标准方式封装文件系统。|1736440|这就是C%2B%2B应该附带的东西！Java很受欢迎的一点是，它附带了一个标准库，可以做任何你想做的事情。不幸的是，C%2B%2B只继承了有限的C/Unix标准函数。|1736441|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Boost's advantages:
It's widely available, will port to any modern C++ compiler or about any platform. 
The functions are platform independant, you don't have to learn a new thread design for each new framework. 
It encapsulates a lot of platfom specific functions, like filesystems in a standard way.

It's what C++ should have shipped with! A lot of Java's popularity was that is shipped with a standard library to do prety much everything you wanted. C++ unfortunately only inherited the limited C/Unix standard functions.

blocks|key|1521698|text|shared_ptr和weak_ptr，特别是在多线程代码中，单独安装boost是值得的。对于进行编译时逻辑检查，BOOST_STATIC_ASSERT也非常酷。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1521699|事实上，boost中的许多类和实用程序都在头文件中，这意味着您可以获得许多功能，而无需编译任何东西，这也是一个加分。可移植性通常不是问题，除非您使用非常旧的编译器。我曾经试图让MPL与VC6一起工作，但在完全崩溃之前，它打印出了40,000个警告/内部错误。但一般来说，无论您的平台或编译器供应商是什么，这个库的大部分都应该可以工作。|1521700|考虑到Boost中相当多的东西已经包含在TR1中，并且很可能会出现在C%2B%2B标准库的下一个修订版中。这是一个相当大的背书。|1521701|entityMap^0|0|A|B|8|1L|J|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|K|$]]

<code>shared_ptr</code> and <code>weak_ptr</code>, especially in multithreaded code, are alone worth installing boost. <code>BOOST_STATIC_ASSERT</code> is also pretty cool for doing compile-time logic checking.

The fact that a lot of the classes and utilities in boost are in headers, meaning you can get a lot of functionality without having to compile anything at all, is also a plus. Portability usually isn't a problem, unless you use an extremely old compiler. I once tried to get MPL to work with VC6 and it printed out 40,000 warnings/internal errors before exploding completely. But in general most of the library should work regardless of your platform or compiler vendor.

Take into consideration the fact that quite a few things from Boost are already in TR1, and will most likely be in the next revision of the C++ standard library. That's a pretty big endorsement.

blocks|key|1736193|text|Boost是一个非常广泛的(通常)通用构造库，可以在几乎任何应用程序中提供帮助。这可以从C%2B%2B+0x规范中包含了大量boost组件的事实中得到证明。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1736194|它至少可以在主要平台上移植，并且应该可以移植到几乎任何具有大多数标准兼容的C%2B%2B编译器的平台上。|1736195|唯一的警告是，boost库之间可能有许多混合的依赖关系，这使得选择一个特定的组件进行分发(而不是整个boost库)变得更加困难。|1736196|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Boost is a very extensive library of (usually) generic constructs that can help in almost any application. This can be shown by the fact that a lot of boost components have been included in the C++ 0x specifications. 

It is also portable across at least the major platforms, and should be portable to almost anything with a mostly standards compliant C++ compiler.

The only warning is that there can be a lot of mingled dependencies between boost libraries, making it harder to pick out just a specific component to distribute (other than the entire boost library).

blocks|key|1521590|text|所有这些，再加上它鼓励了许多现代的、最佳实践的C%2B%2B技术。它倾向于提高代码的质量。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1521591|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

All of the above, plus it encourages a lot of modern, best-practice C++ techniques. It tends to improve the quality of your code.

blocks|key|1521752|text|还请注意，大多数boost是模板，因此不需要构建|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1521753|(只需包含正确的头文件)。|1521754|需要构建的几个部分是可选的：|1521755|这些都可以独立构建，从而防止不需要的代码不必要的膨胀。|1521756|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Also note most of boost is templates so does not require building 
(just include the correct header files). 

The few parts that do require building are optional: 
These can each be built independently thus preventing unnecessary bloat for unneeded code.

Since I have started using this site, I keep hearing about the Boost library. I am wondering what are some of the major benefits of the Boost library (hence why should I use it) and how portable is the Boost library?

Boost Library

文件系统

编译器

Python

Java

Unix

自从我开始使用这个网站以来，我一直听到关于Boost库的消息。我想知道Boost库的一些主要好处是什么(因此我为什么要使用它)，Boost库的可移植性如何？

问Boost库
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