Example 2: Regular expressions.
示例2：正则表达式。
Both lines use regular expressions.
两行都使用了正则表达式。
Regular expressions are complicated.
规则表达式很复杂。
Make the most of regular expressions.
最有效地利用正则表达式。
This example USES regular expressions.
这个例子使用了正则表达式。
Regular expressions are not new to SQL.
正则表达式对SQL 来说并非新事物。
Both thus constitute regular expressions.
它们都构成了正则表达式。
Regular expressions for pattern matching.
用于模式匹配的正则表达式。
Support for regular expressions in queries.
支持查询中的正则表达式。
But now you know the ABCs of regular expressions.
但是您现在已了解了正则表达式的基本知识。
You use regular expressions to implement the mask.
您要使用正则表达式来实现该蒙版。
Spring AOP also offers support for regular expressions.
SpringAOP还提供了对正则表达式的支持。
Also note how easily Ruby supports regular expressions.
还要注意Ruby多么轻松地支持正则表达式。
Allowing for this is not a problem with regular expressions.
实现这一点对于正则表达式而言并不是问题。
But mask strings are not as flexible as regular expressions.
但是掩码字符串不如正则表达式那么灵活。
Many books have been written just about regular expressions.
有大量书籍专门讲述正则表达式。
Let's make up some regular expressions to match each of these.
让我们来建立一些正则表达式，以匹配其中的每一列。
You can describe all of these formats with regular expressions.
所有这些格式都可以用正则表达式来描述。
Regular expressions have their roots in computer language theory.
正则表达式在计算机语言理论中有很长的历史。
Creating a rule file with regular expressions for location and area.
创建规则文件和匹配位置和面积的正则表达式。
At the command line, you'll find many ways to use regular expressions.
在命令行中，可以采用许多方法使用正则表达式。
Basic regular expressions are easy to write, but somewhat hard to read.
基础的正则表达式是非常容易书写的，但难以读懂。
This is further explained in a later discussion of regular expressions.
在以后的规则表达式讨论中会进一步说明这个话题。
The logic becomes trivial when you put regular expressions into action.
使用正则表达式，逻辑就变得简单了。
This is similar to what happened with regular expressions some time ago.
这种情况和以前正则表达式的情况类似。
To deal with this dilemma, you can use advanced regular expressions.
为了解决这个困境，你可以使用一些高级的正则。
TIP: All constraints and display patterns are set by regular expressions.
提示：所有约束和显示模式都由正则表达式来设置。
Regular expressions are a much better means of performing this operation.
正则表达式是执行此操作的更好方法。
If you are very familiar with Perl 5 regular expressions, skip this section.
如果您对Perl5正则表达式非常熟悉，那么可以跳过这一节。
First of all, what is that? This is how Wikipedia defines regular expressions.
首先，什么是正则表达式呢？
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