Character Description \w soann \W \d \D \s \S Matches any character. Any word character. A word character includes upper and lowercase letters, any digit, or the underscore character. Any nonword character. Any digit. Any nondigit. Any whitespace. Any nonwhitespace.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question

So I was going over "regular expressions" in my advanced programming class and my prof showed this table. If someone could, can someone explain which of these I could use punctuation symbols and or an underscore?

 

Character Description
\w
soann
\W
\d
\D
\s
\S
Matches any character.
Any word character. A word character includes upper
and lowercase letters, any digit, or the underscore
character.
Any nonword character.
Any digit.
Any nondigit.
Any whitespace.
Any nonwhitespace.
Transcribed Image Text:Character Description \w soann \W \d \D \s \S Matches any character. Any word character. A word character includes upper and lowercase letters, any digit, or the underscore character. Any nonword character. Any digit. Any nondigit. Any whitespace. Any nonwhitespace.
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