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深入学习 C++ String

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深入学习 C+++string2.1 版
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目录 
正文 
一、 的  的使用 
 简介 
 的成员 
 
 
 
 
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 
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# 
##!!$ 
##!$ 
# !!$ 
# !$ 
  !! 
 
 % 
"&' 
(%) 
 
 
  
* 
' 
# 
' 
( 
+ 
 的构造 
 的重载运算符 
 与  !%" 相结合的使用 
 与 "!* 
 与 (,(、! 
 与 % 
 和 #、#$ 
 与 !、!$ 
 与 !(、!($ 
 与 + 
简介 
+ 实例 
+ 与控制台 
 与 + 的相互转换 
 与 流 
流简介 
 与 !"、$" 
格式化字符串 
简单常用的  方法 
!! 的方法 
 !-$.!" 
 与 / 
二、 !! 字符串算法库 
!! 字符串算法库导论 

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董波
深入学习 C+++string2.1 版
!! !%" 是什么？ 
相关 
!! 导论 
!!& 导论 
!! !%" 的 012 
!! 字符串算法解密 
修剪（"%） 
转换3!*%4 
判断式、断言函数（%）【 5】 
查找 
删除和替换 
分割和组合 
分词 
其它 
三、  字符串 
 字符串常用算法 
+ 
+ 
%+% 
"+" 
"+" 
 +  
 +6 ++ +6+ + 
+ 
+ 
(6(+(6+( 
+ 
)+) 
*6*+*6+* 
66 +6+6+  
6+ 
!)6+!) 
(6(+(6+( 
更安全的  字符串函数 
简述 
简单实例 
定制 
兼容 
通用字串函数 
简述 
简单实例 
映射表 
257 级的字符串处理 
简述 
旧的 257 
/%   字符串函数 
新的安全版字符串处理 257 
四、 字符串分词 
简介 
 库 
" 
!! 字符串算法库的分词技术 
泛型算法 
迭代器 
!!!)' 
组件 
工具类解析 
!!!)' 的缺陷 
 !-!) 
效率大 58 
五、 字符串使用的建议 
附录 ：参考资料： 
附录 ： 9//:; 中  的部分源码解读 
 的   !! 
2  ! 和 0  ! 
  !! 的泛型实现 

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董波

深入学习 C+++string2.1 版

 与 % 

以 % 和 +% 特化 % 

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董波

深入学习 C+++string2.1 版

简介：

字符串处理是程序设计语言的一个重要的组成部分。有的字符串是内置的(VB 等)，有的是模拟的(C 字符串为字符集合，算法等以库的形式提

供)，而 C++所提供的字符串 std::string是以库的形式提供的。

学习 string 相关的操作是学习 C++语言很重要的一个内容，灵活的使用 string 对我们的程序设计是非常有帮助的，熟练使用 string 以

及其相关的算法也是一项基本技能。

本文将对 C++的 string 体系做一些讨论，主要内容包括：

1.string 的使用

2.boost.algorithm.string 的使用以及其部分源码分析。

3.C 风格字符串的操作和使用。

4.字符串分词库。

5.一些关于字符串使用的建议。

本文档是《C++ String 深入详解 2.0 的升级版》。

声明：

本文中选择的源码为 MSSTL 和 boost1.37，例子为作者亲手所写，如果代码来自网络或者其它地方我会尽量声明出处。人难免会有疏漏，

所以可能会有照顾不周的地方，我也无意侵害您的权益，如果您发现了这样的情况在本文档中出现，请您通知我，我保证马上更正。本文中凡是

作者原创的内容，您可以随意修改与使用，欢迎您传播。

另外如果您发现文档中有疏漏的地方请您及时通知我，我会及时修改，免得误导更多的朋友，谢谢！

如果您有问题或者意见请到这里参与讨论：

http://hi.baidu.com/_%E2d_%B7%B3_%DE%B2%C2%D2/blog/item/2177742e8e067f5a4fc2268b.html

一、 C++的 string 的使用

1.1 C++ string 简介

C++兼容 C 对字符串的处理方式，与此同时还在标准库(STL)中提供了 string容器，我们可以很容易的使用 string 来进行字符串处理。

而且 string 还能很好的与标准库中的泛型算法结合起来使用，非常的方便。虽然在 MFC 等框架中也提供了诸如 CString 这样的字符串处理类，

但是个人认为 STL 的 string 依然是最棒的，使用标准库提供的 string 可以轻松的与原来的 C API 兼容，也可以很好的与系统底层的 API 兼

容。

1.2 string 的成员

1.2.1 append

在尾部添加字符或者字符串

append 共有 8 种重载，分别如下：