Real Scenario(现实场景)
Here's the scenario: you're given the job of checking the pages on a web server for doubled words (such as "this this"), a common problem with documents subject to heavy ed...
General Concept(一般概念)
If you master the general concept of regular expressions, it's a short step to mastering a particular implementation.
如果你掌握了一般性的概念,你也很容易学会某个具体的...