Learning Regular Expressions
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Learning Regular Expressions: (Learning)

Learning Regular Expressions: (Learning)


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About the Book

Learn to use one of the most powerful text processing and manipulation tools available Regular expression experts have long been armed with an incredibly powerful tool, one that can be used to perform all sorts of sophisticated text processing and manipulation in just about every language and on every platform. That’s the good news. The bad news is that for too long, regular expressions have been the exclusive property of only the most tech savvy. Until now. Ben Forta's Learning Regular Expressions teaches you the regular expressions that you really need to know, starting with simple text matches and working up to more complex topics, including the use of backreferences, conditional evaluation, and look-ahead processing. You’ll learn what you can use, and you’ll learn it methodically, systematically, and simply. Regular expressions are nowhere near as complex as they appear to be at first glance. All it takes is a clear understanding of the problem being solved and how to leverage regular expressions to solve them. Read and understand regular expressions Use literal text and metacharacters to build powerful search patterns Take advantage of advanced regular expression features, including lookahead and backreferences Perform powerful search-and-replace operations in all major professional editing tools Add sophisticated form and text processing to web applications Search for files using command-line tools like grep and egrep Use regular expressions in programming languages like JavaScript, Java, PHP, Python, Microsoft .NET, and C#, as well as in DBMSs including MySQL and Oracle Work with phone numbers, postal codes, social security numbers, IP addresses, URLs, email addresses, and credit card numbers Contents at a Glance 1 Introducing Regular Expressions 2 Matching Single Characters 3 Matching Sets of Characters 4 Using Metacharacters 5 Repeating Matches 6 Position Matching 7 Using Subexpressions 8 Using Backreferences 9 Looking Ahead and Behind 10 Embedding Conditions 11 Regular Expression Solutions to Common Problems Appendix A Regular Expressions in Popular Applications and Languages

Table of Contents:
Introduction 1 Chapter 1 Introducing Regular Expressions 3 Understanding the Need 3 How Regular Expressions Are Used 4     RegEx Searches 4     RegEx Replaces 5 So What Exactly Is a Regular Expression? 5 Using Regular Expressions 6 Before You Get Started 7 Summary 7 Chapter 2 Matching Single Characters 9 Matching Literal Text 9     How Many Matches? 10     Handling Case Sensitivity 10 Matching Any Characters 11 Matching Special Characters 14 Summary 16 Chapter 3 Matching Sets of Characters 17 Matching One of Several Characters 17 Using Character Set Ranges 20 “Anything But” Matching 23 Summary 24 Chapter 4 Using Metacharacters 25 Escaping Revisited 25 Matching Whitespace Characters 28 Matching Specific Character Types 29     Matching Digits (and Nondigits) 29     Matching Alphanumeric Characters (and Nonalphanumeric Characters) 31     Matching Whitespace (and Nonwhitespace) 32     Specifying Hexadecimal or Octal Values 32 Using POSIX Character Classes 33 Summary 35 Chapter 5 Repeating Matches 37 How Many Matches? 37     Matching One or More Characters 38     Matching Zero or More Characters 40     Matching Zero or One Characters 42 Using Intervals 44     Exact Interval Matching 44     Range Interval Matching 45      “At Least” Interval Matching 46 Preventing Over Matching 48 Summary 49 Chapter 6 Position Matching 51 Using Boundaries 51 Using Word Boundaries 52 Defining String Boundaries 54     Using Multiline Mode 57 Summary 58 Chapter 7 Using Subexpressions 59 Understanding Subexpressions 59 Grouping with Subexpressions 60 Nesting Subexpressions 63 Summary 66 Chapter 8 Using Backreferences 67 Understanding Backreferences 67 Matching with Backreferences 70 Performing Replace Operations 73     Converting Case 75 Summary 76 Chapter 9 Looking Ahead and Behind 77 Introducing Lookaround 77 Looking Ahead 78 Looking Behind 80 Combining Lookahead and Lookbehind 82 Negating Lookaround 83 Summary 85 Chapter 10 Embedding Conditions 87 Why Embed Conditions? 87 Using Conditions 88     Backreference Conditions 88     Lookaround Conditions 90 Summary 92 Chapter 11 Regular Expression Solutions to Common Problems 93 North American Phone Numbers 93 U.S. ZIP Codes 95 Canadian Postal Codes 95 United Kingdom Postcodes 96 U.S. Social Security Numbers 97 IP Addresses 98 URLs 98 Complete URLs 99 Email Addresses 100 HTML Comments 101 JavaScript Comments 102 Credit Card Numbers 103 Summary 107 Appendix A Regular Expressions in Popular Applications and Languages 109 grep 109 Java 110 JavaScript 111 Microsoft .NET 111 Microsoft SQL Server T-SQL 112 Microsoft Visual Studio .NET 112 MySQL 113 Oracle PL/SQL 114 Perl 114 PHP 115 Python 116   9780134757063    TOC    4/5/2018  

About the Author :
Ben Forta is Adobe Systems’ Senior Director of Education Initiatives. He is also the author of numerous books on SQL, regular expressions, ColdFusion, Windows development, JSP, and more. His book Teach Yourself SQL in 10 Minutes is the best-selling book on SQL of all time.  


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Product Details
  • ISBN-13: 9780134757643
  • Publisher: Pearson Education (US)
  • Publisher Imprint: Addison Wesley
  • Language: English
  • Series Title: Learning
  • ISBN-10: 0134757645
  • Publisher Date: 01 May 2018
  • Binding: Digital download
  • No of Pages: 144


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Learning Regular Expressions: (Learning)
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