什么是正则表达式中复制字符串替换？
从文件读取的字符串替换。
随后又使用连接后的字符串替换这些字符串。
如何在一个与它的值的字符串替换的表达？
这里有一些例子，注意字符串替换符的使用。
Here are some examples which incorporate the above patterns. Note the use of the string substitution operators.
为阐述下字符串替换的概念，我们来展示几个例子。
To illustrate the concept of string substitution, some example rules are shown below.
首先完成包含步骤，这可以利用简单的字符串替换来完成。
Take the include step first, which you can accomplish with simple string substitution.
通过用较短的字符串替换经常出现的长字符串，可以压缩数据。
Data is compressed by replacing frequently occurring bit strings with shorter strings.
这将允许使用简单的字符串替换来创建基于用户名的服务url。
This allows us to use simple string substitution to create a service URL based on a username.
在元素中指定模式时，请注意，要使用正则表达式来执行匹配和字符串替换。
When specifying patterns in the element, realize that regular expressions are used to perform the matching and string replacement.
但是对于本例来说，字符串替换方法更简单一些，并且提供刚好所需的验证。
However, in this case string substitution is simpler and provides as much validation as is needed. Listing 6 shows the string-substitution technique.
把现有的字符串替换为报表的默认动作url，单击OK关闭Text对话框。
Replace the existing string with the default action URL for the report, and close the Text dialog by clicking OK.
正如您所见，to_xml方法仅使用字符串模板和字符串替换来创建xml节点。
As you can see, the to_xml method simply USES a string template and string substitution to create an XML node.
本例将ERb方式的替换与提供简单字符串的基本Ruby字符串替换结合了起来。
This example combines the ERb-style substitutions with the primitive Ruby string substitutions provided with simple strings.
提取每个(step3)HTML元素，执行字符串替换操作(step3a1)。
Extract each (step3) HTML element, applying a string replace operation (step3a1).
这里我们需要将选中的文本包装到选定的样式标签中，并使用这个新的字符串替换文档里选中的文本。
Here, we need to wrap the selected text into the selected style tags and replace the selected text in the document with this new string.
在这个例子中，每当用户单击滚动条时，便用一个更新的字符串替换DIV标记的innerhtml值。
In this case, you replace the innerHTML value of the DIV tag with an updated string each time the user clicks on the scrollbar.
基本上来说，如果您使用简单的字符串拼接或字符串替换操作来创建SQL查询，那么就很可能面临着问题。
Basically, if you're using simple string concatenation or string substitution to create SQL queries, it's likely you're headed for trouble.
对于这个简单的示例，可以在FormatString中使用格式定义序列%s，表示应该进行字符串替换。
For this simple example, you can use the format specification sequence % s in your FormatString to indicate that a string substitution should occur.
当要编写规则处理多个相似的设备时，udev可以使用类似C语言的printf函数中的字符串替换操作符。
When writing rules which will potentially handle multiple similar devices, udev's printf-like string substitution operators are very useful.
对于每一个要解析的新模式，该实现在注册表中搜索已保存的完全限定模式名，并且在给定的模式中做字符串替换。
For every new schema it is parsing, the implementation looks for a fully qualified schema name, that is already stored in the registry and is doing string replacement in a given schema.
在指定输入子字符串内，使用指定替换字符串替换与某个正则表达式模式匹配的字符串(其数目为指定的最大数目)。
Within a specified input string, replaces a specified maximum number of strings that match a regular expression pattern with a specified replacement string.
调用 preg_replace()函数将用空字符串替换美元符号、所有空格和每个逗号，生成认为是整数的内容。
The call to the preg_replace() function replaces the dollar sign, any whitespace, and every comma with the empty string, yielding what's supposed to be an integer.
您可以使用s/searchstring/replacestring/构造将给定字符串替换为另一个字符串。
You can use the s/searchstring/replacestring/ construct to replace a given string with another. To replace the first occurrence of old on every line in a file, use the following
更名像其他许多文件重命名实用工具提供它的用户提供重命名前缀，后缀改变的情况下，字符串替换，改变文件扩展名和更多的功能。
ReNamer like many other file renaming utilities provides it's user with the ability to rename prefixes, suffixes, change case, string replacements, change file extensions and much more.
它与清单7的相似之处在于它替换了固定字符串，但诀窍在于替代该固定字符串的字符串本身在下次替换时又成了固定字符串。
It is similar to Listing 7 in that it replaces a fixed string, but the trick is that the replacement itself for the fixed string becomes the fixed string the next time.
那个函数则接收匹配到的数组作为参数，然后返回一个修改后的字符串作为替换。
This function receives the match array as a parameter and returns a modified string that is used as a replacement.
如果使用圆括号将模式元素括起来，您可以在替换字符串中使用匹配的内容。
If you wrap pattern elements in parentheses, you can use the matched contents in the replacement string.
在调用解密命令之前，清单13中的字符串操作函数将替换丢失的格式。
The string manipulation functions in Listing 13 replace the lost formatting before the decryption command is called.
如果您需要在这些参数后面再使用其他参数，可以使用- i选项指定一个替换字符串。
If you have a requirement to use them as arguments with other arguments following, then you use the -i option to specify a replacement string.
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