From the course: Learning Regular Expressions
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Shorthand character sets - Regular Expressions Tutorial
From the course: Learning Regular Expressions
Shorthand character sets
- Most regular expression engines allow us to use shorthand character sets. They can be very useful and save you some typing. If we use the back slash d in a regular expression it means any one digit. It's the equivalent of having a character set that has the character range zero through nine in it. Back slash w is a word character. That would be the equivalent of all the letters A to Z, both lowercase and uppercase. All numbers zero through nine, and the underscore you can see that's quite a bit less typing. And then back slash s is the shorthand for white space. That's not only a space like the space between words but it's also a tab or any kind of line return or line feed. There's also the negative version of each of those which you get by just capitalizing the letter back slash capital D back slash capital W, back slash capital S. In the case of back slash D it would be anything that's not a digit so it's any one…
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