SlideShare una empresa de Scribd logo

Introduction to regular expressions

•Descargar como PPT, PDF•
•
B
Ben Brumfield

Introduction to Regular Expressions for THATCamp Texas 2011

Tecnología
1 de 34
Introduction to Regular Expressions Ben Brumfield THATCamp Texas 2011
What are Regular Expressions? ,[object Object],[object Object],[object Object],[object Object],[object Object]
Why Use Regular Expressions? ,[object Object],[object Object],[object Object],[object Object],[object Object]
The Basics ,[object Object],[object Object],[object Object],[object Object],[object Object]
/at/ ,[object Object],Athens aft atlas that hat at
/at/ ,[object Object],Athens aft at las th at h at at
Some Theory ,[object Object]
Characters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Character Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
/[ch]at/ ,[object Object],phat fat cat chat at that
/[ch]at/ ,[object Object],p hat fat cat c hat at t hat
Ranges ,[object Object],[object Object],[object Object],[object Object]
Shortcuts [^ ] not space [^] (depends on mode) everything . [a-zA-Z0-9_] word [^a-zA-Z0-9_] not word [0-9] digit [^0-9] not digit [ ] space Equivalent Class Name Shortcut
/[- ]/ ,[object Object],[object Object],[object Object],[object Object],653-6464x256 PE6-5000 713-342-7452 652.2648 234 1252 501-1234
/[- ]/ ,[object Object],[object Object],[object Object],[object Object],653-6464 x256 PE6-5000 713- 342-7452 652.2648 234 1252 501-1234
Repeaters ,[object Object],[object Object],[object Object],at least n times { n ,} no more than m times {, m } between n and m times { n , m } exactly n { n } zero or more * one or more + zero or one ? Count Repeater
Repeaters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],at least n times { n ,} no more than m times {, m } between n and m times { n , m } exactly n { n } zero or more * one or more + zero or one ? Count Repeater
Repeaters ,[object Object],[object Object],[object Object],[object Object],[object Object]
Lab Session I ,[object Object],[object Object],[object Object],[object Object],[object Object]
Lab Reference at least n times { n ,} no more than m times {, m } between n and m times { n , m } exactly n { n } zero or more * one or more + zero or one ? Count Repeater everything . not space space not word word not digit digit Name Shortcut
Anchors ,[object Object],[object Object],[object Object],raw end of string (rare) end of string start of string not boundary word boundary end of line $ start of line ^ Matches Anchor
Alternation ,[object Object],[object Object],[object Object],[object Object]
Grouping ,[object Object],[object Object],[object Object]
Grouping Example ,[object Object]
Grouping Example ,[object Object],[object Object],[object Object]
Replacement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Capture ,[object Object],[object Object],[object Object],[object Object],[object Object]
Capture ,[object Object],[object Object],[object Object]
Capture ,[object Object],[object Object],[object Object],[object Object]
Capture ,[object Object],[object Object],[object Object],[object Object]
Capture ,[object Object],[object Object],[object Object],[object Object],[object Object]
Lab Session II ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Caveats ,[object Object],[object Object]
Acknowledgments ,[object Object],[object Object],[object Object]

Recomendados

Regular Expression
Regular ExpressionRegular Expression
Regular ExpressionMahzad Zahedi
 
Regex Presentation
Regex PresentationRegex Presentation
Regex Presentationarnolambert
 
Regular Expressions
Regular ExpressionsRegular Expressions
Regular ExpressionsSatya Narayana
 
Regular Expressions 101 Introduction to Regular Expressions
Regular Expressions 101 Introduction to Regular ExpressionsRegular Expressions 101 Introduction to Regular Expressions
Regular Expressions 101 Introduction to Regular ExpressionsDanny Bryant
 
Advanced regular expressions
Advanced regular expressionsAdvanced regular expressions
Advanced regular expressionsNeha Jain
 
Introducing Regular Expressions
Introducing Regular ExpressionsIntroducing Regular Expressions
Introducing Regular ExpressionsNeha Jain
 
Regex - Regular Expression Basics
Regex - Regular Expression BasicsRegex - Regular Expression Basics
Regex - Regular Expression BasicsEterna Han Tsai
 
5 the relational algebra and calculus
5 the relational algebra and calculus5 the relational algebra and calculus
5 the relational algebra and calculusKumar
 

Recomendados

Regular Expression
Regular ExpressionRegular Expression
Regular ExpressionMahzad Zahedi
 
Regex Presentation
Regex PresentationRegex Presentation
Regex Presentationarnolambert
 
Regular Expressions
Regular ExpressionsRegular Expressions
Regular ExpressionsSatya Narayana
 
Regular Expressions 101 Introduction to Regular Expressions
Regular Expressions 101 Introduction to Regular ExpressionsRegular Expressions 101 Introduction to Regular Expressions
Regular Expressions 101 Introduction to Regular ExpressionsDanny Bryant
 
Advanced regular expressions
Advanced regular expressionsAdvanced regular expressions
Advanced regular expressionsNeha Jain
 
Introducing Regular Expressions
Introducing Regular ExpressionsIntroducing Regular Expressions
Introducing Regular ExpressionsNeha Jain
 
Regex - Regular Expression Basics
Regex - Regular Expression BasicsRegex - Regular Expression Basics
Regex - Regular Expression BasicsEterna Han Tsai
 
5 the relational algebra and calculus
5 the relational algebra and calculus5 the relational algebra and calculus
5 the relational algebra and calculusKumar
 
Regular expressions
Regular expressionsRegular expressions
Regular expressionsIgnaz Wanders
 
SQL Functions
SQL FunctionsSQL Functions
SQL Functionsammarbrohi
 
Regex Basics
Regex BasicsRegex Basics
Regex BasicsJeremy Coates
 
Regular expression
Regular expressionRegular expression
Regular expressionLarry Nung
 
Document Object Model
Document Object ModelDocument Object Model
Document Object Modelbaabtra.com - No. 1 supplier of quality freshers
 
Mysql joins
Mysql joinsMysql joins
Mysql joinsbaabtra.com - No. 1 supplier of quality freshers
 
Regular Expressions 101
Regular Expressions 101Regular Expressions 101
Regular Expressions 101Raj Rajandran
 
Map(), flatmap() and reduce() are your new best friends: simpler collections,...
Map(), flatmap() and reduce() are your new best friends: simpler collections,...Map(), flatmap() and reduce() are your new best friends: simpler collections,...
Map(), flatmap() and reduce() are your new best friends: simpler collections,...Chris Richardson
 
Javascript built in String Functions
Javascript built in String FunctionsJavascript built in String Functions
Javascript built in String FunctionsAvanitrambadiya
 
MYSQL Aggregate Functions
MYSQL Aggregate FunctionsMYSQL Aggregate Functions
MYSQL Aggregate FunctionsLeroy Blair
 
Hashing
HashingHashing
HashingVARSHAKUMARI49
 
CSS Positioning and Features of CSS3
CSS Positioning and Features of CSS3CSS Positioning and Features of CSS3
CSS Positioning and Features of CSS3Jaimin Brahmbhatt
 
An Introduction to Regular expressions
An Introduction to Regular expressionsAn Introduction to Regular expressions
An Introduction to Regular expressionsYamagata Europe
 
Why functional programming and category theory strongly matters
Why functional programming and category theory strongly mattersWhy functional programming and category theory strongly matters
Why functional programming and category theory strongly mattersPiotr Paradziński
 
3.2 javascript regex
3.2 javascript regex3.2 javascript regex
3.2 javascript regexJalpesh Vasa
 
Supporting Over a Thousand Custom Hive User Defined Functions
Supporting Over a Thousand Custom Hive User Defined FunctionsSupporting Over a Thousand Custom Hive User Defined Functions
Supporting Over a Thousand Custom Hive User Defined FunctionsDatabricks
 
Monoids - Part 1 - with examples using Scalaz and Cats
Monoids - Part 1 - with examples using Scalaz and CatsMonoids - Part 1 - with examples using Scalaz and Cats
Monoids - Part 1 - with examples using Scalaz and CatsPhilip Schwarz
 
9. Object Relational Databases in DBMS
9. Object Relational Databases in DBMS9. Object Relational Databases in DBMS
9. Object Relational Databases in DBMSkoolkampus
 
Using SQL Queries to Insert, Update, Delete, and View Data.ppt
Using SQL Queries to Insert, Update, Delete, and View Data.pptUsing SQL Queries to Insert, Update, Delete, and View Data.ppt
Using SQL Queries to Insert, Update, Delete, and View Data.pptMohammedJifar1
 
Mysql datatypes
Mysql datatypesMysql datatypes
Mysql datatypesV.V.Vanniaperumal College for Women
 
Introduction to Regular Expressions
Introduction to Regular ExpressionsIntroduction to Regular Expressions
Introduction to Regular ExpressionsMatt Casto
 
Lecture: Regular Expressions and Regular Languages
Lecture: Regular Expressions and Regular LanguagesLecture: Regular Expressions and Regular Languages
Lecture: Regular Expressions and Regular LanguagesMarina Santini
 

Más contenido relacionado

La actualidad más candente

Regular expression
Regular expressionRegular expression
Regular expressionLarry Nung
 
Regular Expressions 101
Regular Expressions 101Regular Expressions 101
Regular Expressions 101Raj Rajandran
 
Map(), flatmap() and reduce() are your new best friends: simpler collections,...
Map(), flatmap() and reduce() are your new best friends: simpler collections,...Map(), flatmap() and reduce() are your new best friends: simpler collections,...
Map(), flatmap() and reduce() are your new best friends: simpler collections,...Chris Richardson
 
Javascript built in String Functions
Javascript built in String FunctionsJavascript built in String Functions
Javascript built in String FunctionsAvanitrambadiya
 
MYSQL Aggregate Functions
MYSQL Aggregate FunctionsMYSQL Aggregate Functions
MYSQL Aggregate FunctionsLeroy Blair
 
CSS Positioning and Features of CSS3
CSS Positioning and Features of CSS3CSS Positioning and Features of CSS3
CSS Positioning and Features of CSS3Jaimin Brahmbhatt
 
An Introduction to Regular expressions
An Introduction to Regular expressionsAn Introduction to Regular expressions
An Introduction to Regular expressionsYamagata Europe
 
Why functional programming and category theory strongly matters
Why functional programming and category theory strongly mattersWhy functional programming and category theory strongly matters
Why functional programming and category theory strongly mattersPiotr Paradziński
 
3.2 javascript regex
3.2 javascript regex3.2 javascript regex
3.2 javascript regexJalpesh Vasa
 
Supporting Over a Thousand Custom Hive User Defined Functions
Supporting Over a Thousand Custom Hive User Defined FunctionsSupporting Over a Thousand Custom Hive User Defined Functions
Supporting Over a Thousand Custom Hive User Defined FunctionsDatabricks
 
Monoids - Part 1 - with examples using Scalaz and Cats
Monoids - Part 1 - with examples using Scalaz and CatsMonoids - Part 1 - with examples using Scalaz and Cats
Monoids - Part 1 - with examples using Scalaz and CatsPhilip Schwarz
 
9. Object Relational Databases in DBMS
9. Object Relational Databases in DBMS9. Object Relational Databases in DBMS
9. Object Relational Databases in DBMSkoolkampus
 
Using SQL Queries to Insert, Update, Delete, and View Data.ppt
Using SQL Queries to Insert, Update, Delete, and View Data.pptUsing SQL Queries to Insert, Update, Delete, and View Data.ppt
Using SQL Queries to Insert, Update, Delete, and View Data.pptMohammedJifar1
 

La actualidad más candente (20)

Regular expressions
Regular expressionsRegular expressions
Regular expressions
 
SQL Functions
SQL FunctionsSQL Functions
SQL Functions
 
Regex Basics
Regex BasicsRegex Basics
Regex Basics
 
Regular expression
Regular expressionRegular expression
Regular expression
 
Document Object Model
Document Object ModelDocument Object Model
Document Object Model
 
Mysql joins
Mysql joinsMysql joins
Mysql joins
 
Regular Expressions 101
Regular Expressions 101Regular Expressions 101
Regular Expressions 101
 
Map(), flatmap() and reduce() are your new best friends: simpler collections,...
Map(), flatmap() and reduce() are your new best friends: simpler collections,...Map(), flatmap() and reduce() are your new best friends: simpler collections,...
Map(), flatmap() and reduce() are your new best friends: simpler collections,...
 
Javascript built in String Functions
Javascript built in String FunctionsJavascript built in String Functions
Javascript built in String Functions
 
MYSQL Aggregate Functions
MYSQL Aggregate FunctionsMYSQL Aggregate Functions
MYSQL Aggregate Functions
 
Hashing
HashingHashing
Hashing
 
CSS Positioning and Features of CSS3
CSS Positioning and Features of CSS3CSS Positioning and Features of CSS3
CSS Positioning and Features of CSS3
 
An Introduction to Regular expressions
An Introduction to Regular expressionsAn Introduction to Regular expressions
An Introduction to Regular expressions
 
Why functional programming and category theory strongly matters
Why functional programming and category theory strongly mattersWhy functional programming and category theory strongly matters
Why functional programming and category theory strongly matters
 
3.2 javascript regex
3.2 javascript regex3.2 javascript regex
3.2 javascript regex
 
Supporting Over a Thousand Custom Hive User Defined Functions
Supporting Over a Thousand Custom Hive User Defined FunctionsSupporting Over a Thousand Custom Hive User Defined Functions
Supporting Over a Thousand Custom Hive User Defined Functions
 
Monoids - Part 1 - with examples using Scalaz and Cats
Monoids - Part 1 - with examples using Scalaz and CatsMonoids - Part 1 - with examples using Scalaz and Cats
Monoids - Part 1 - with examples using Scalaz and Cats
 
9. Object Relational Databases in DBMS
9. Object Relational Databases in DBMS9. Object Relational Databases in DBMS
9. Object Relational Databases in DBMS
 
Using SQL Queries to Insert, Update, Delete, and View Data.ppt
Using SQL Queries to Insert, Update, Delete, and View Data.pptUsing SQL Queries to Insert, Update, Delete, and View Data.ppt
Using SQL Queries to Insert, Update, Delete, and View Data.ppt
 
Mysql datatypes
Mysql datatypesMysql datatypes
Mysql datatypes
 

Destacado

Introduction to Regular Expressions
Introduction to Regular ExpressionsIntroduction to Regular Expressions
Introduction to Regular ExpressionsMatt Casto
 
Lecture: Regular Expressions and Regular Languages
Lecture: Regular Expressions and Regular LanguagesLecture: Regular Expressions and Regular Languages
Lecture: Regular Expressions and Regular LanguagesMarina Santini
 
3, regular expression
3, regular expression3, regular expression
3, regular expressionted-xu
 
101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressions101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressionsAcácio Oliveira
 
101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressions101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressionsAcácio Oliveira
 
Presentation at RegX on Business Model Innovation and Speed Creation 20120904
Presentation at RegX on Business Model Innovation and Speed Creation 20120904Presentation at RegX on Business Model Innovation and Speed Creation 20120904
Presentation at RegX on Business Model Innovation and Speed Creation 20120904Matthias Pohle
 
Linux fundamental - Chap 06 regx
Linux fundamental - Chap 06 regxLinux fundamental - Chap 06 regx
Linux fundamental - Chap 06 regxKenny (netman)
 
Unix command-line tools
Unix command-line toolsUnix command-line tools
Unix command-line toolsEric Wilson
 
Practical Example of grep command in unix
Practical Example of grep command in unixPractical Example of grep command in unix
Practical Example of grep command in unixJavin Paul
 
Linux.ppt
Linux.ppt Linux.ppt
Linux.ppt onu9
 

Destacado (11)

Introduction to Regular Expressions
Introduction to Regular ExpressionsIntroduction to Regular Expressions
Introduction to Regular Expressions
 
Lecture: Regular Expressions and Regular Languages
Lecture: Regular Expressions and Regular LanguagesLecture: Regular Expressions and Regular Languages
Lecture: Regular Expressions and Regular Languages
 
3, regular expression
3, regular expression3, regular expression
3, regular expression
 
101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressions101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressions
 
101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressions101 3.7 search text files using regular expressions
101 3.7 search text files using regular expressions
 
Presentation at RegX on Business Model Innovation and Speed Creation 20120904
Presentation at RegX on Business Model Innovation and Speed Creation 20120904Presentation at RegX on Business Model Innovation and Speed Creation 20120904
Presentation at RegX on Business Model Innovation and Speed Creation 20120904
 
Regular Expressions
Regular ExpressionsRegular Expressions
Regular Expressions
 
Linux fundamental - Chap 06 regx
Linux fundamental - Chap 06 regxLinux fundamental - Chap 06 regx
Linux fundamental - Chap 06 regx
 
Unix command-line tools
Unix command-line toolsUnix command-line tools
Unix command-line tools
 
Practical Example of grep command in unix
Practical Example of grep command in unixPractical Example of grep command in unix
Practical Example of grep command in unix
 
Linux.ppt
Linux.ppt Linux.ppt
Linux.ppt
 

Similar a Introduction to regular expressions

Introduction to Regular Expressions RootsTech 2013
Introduction to Regular Expressions RootsTech 2013Introduction to Regular Expressions RootsTech 2013
Introduction to Regular Expressions RootsTech 2013Ben Brumfield
 
Bioinformatica 06-10-2011-p2 introduction
Bioinformatica 06-10-2011-p2 introductionBioinformatica 06-10-2011-p2 introduction
Bioinformatica 06-10-2011-p2 introductionProf. Wim Van Criekinge
 
Class 5 - PHP Strings
Class 5 - PHP StringsClass 5 - PHP Strings
Class 5 - PHP StringsAhmed Swilam
 
Basta mastering regex power
Basta mastering regex powerBasta mastering regex power
Basta mastering regex powerMax Kleiner
 
Unit 1-array,lists and hashes
Unit 1-array,lists and hashesUnit 1-array,lists and hashes
Unit 1-array,lists and hashessana mateen
 
Php Chapter 4 Training
Php Chapter 4 TrainingPhp Chapter 4 Training
Php Chapter 4 TrainingChris Chubb
 
Maxbox starter20
Maxbox starter20Maxbox starter20
Maxbox starter20Max Kleiner
 
Introduction to Perl
Introduction to PerlIntroduction to Perl
Introduction to PerlSway Wang
 
Strings,patterns and regular expressions in perl
Strings,patterns and regular expressions in perlStrings,patterns and regular expressions in perl
Strings,patterns and regular expressions in perlsana mateen
 
Unit 1-strings,patterns and regular expressions
Unit 1-strings,patterns and regular expressionsUnit 1-strings,patterns and regular expressions
Unit 1-strings,patterns and regular expressionssana mateen
 
Regular expressions
Regular expressionsRegular expressions
Regular expressionsJames Gray
 
Regular expressions
Regular expressionsRegular expressions
Regular expressionsRaj Gupta
 
Regular expressions
Regular expressionsRegular expressions
Regular expressionskeeyre
 
Regular Expressions 2007
Regular Expressions 2007Regular Expressions 2007
Regular Expressions 2007Geoffrey Dunn
 
And now you have two problems. Ruby regular expressions for fun and profit by...
And now you have two problems. Ruby regular expressions for fun and profit by...And now you have two problems. Ruby regular expressions for fun and profit by...
And now you have two problems. Ruby regular expressions for fun and profit by...Codemotion
 
Looking for Patterns
Looking for PatternsLooking for Patterns
Looking for PatternsKeith Wright
 
Bioinformatics p2-p3-perl-regexes v2013-wim_vancriekinge
Bioinformatics p2-p3-perl-regexes v2013-wim_vancriekingeBioinformatics p2-p3-perl-regexes v2013-wim_vancriekinge
Bioinformatics p2-p3-perl-regexes v2013-wim_vancriekingeProf. Wim Van Criekinge
 

Similar a Introduction to regular expressions (20)

Introduction to Regular Expressions RootsTech 2013
Introduction to Regular Expressions RootsTech 2013Introduction to Regular Expressions RootsTech 2013
Introduction to Regular Expressions RootsTech 2013
 
Bioinformatica 06-10-2011-p2 introduction
Bioinformatica 06-10-2011-p2 introductionBioinformatica 06-10-2011-p2 introduction
Bioinformatica 06-10-2011-p2 introduction
 
Class 5 - PHP Strings
Class 5 - PHP StringsClass 5 - PHP Strings
Class 5 - PHP Strings
 
Bioinformatica p2-p3-introduction
Bioinformatica p2-p3-introductionBioinformatica p2-p3-introduction
Bioinformatica p2-p3-introduction
 
Basta mastering regex power
Basta mastering regex powerBasta mastering regex power
Basta mastering regex power
 
Unit 1-array,lists and hashes
Unit 1-array,lists and hashesUnit 1-array,lists and hashes
Unit 1-array,lists and hashes
 
Php Chapter 4 Training
Php Chapter 4 TrainingPhp Chapter 4 Training
Php Chapter 4 Training
 
Maxbox starter20
Maxbox starter20Maxbox starter20
Maxbox starter20
 
Bioinformatics p2-p3-perl-regexes v2014
Bioinformatics p2-p3-perl-regexes v2014Bioinformatics p2-p3-perl-regexes v2014
Bioinformatics p2-p3-perl-regexes v2014
 
Introduction to Perl
Introduction to PerlIntroduction to Perl
Introduction to Perl
 
Strings,patterns and regular expressions in perl
Strings,patterns and regular expressions in perlStrings,patterns and regular expressions in perl
Strings,patterns and regular expressions in perl
 
Unit 1-strings,patterns and regular expressions
Unit 1-strings,patterns and regular expressionsUnit 1-strings,patterns and regular expressions
Unit 1-strings,patterns and regular expressions
 
Regular expressions
Regular expressionsRegular expressions
Regular expressions
 
Regular expressions
Regular expressionsRegular expressions
Regular expressions
 
Regular expressions
Regular expressionsRegular expressions
Regular expressions
 
Regular Expressions 2007
Regular Expressions 2007Regular Expressions 2007
Regular Expressions 2007
 
And now you have two problems. Ruby regular expressions for fun and profit by...
And now you have two problems. Ruby regular expressions for fun and profit by...And now you have two problems. Ruby regular expressions for fun and profit by...
And now you have two problems. Ruby regular expressions for fun and profit by...
 
Looking for Patterns
Looking for PatternsLooking for Patterns
Looking for Patterns
 
Bioinformatics p2-p3-perl-regexes v2013-wim_vancriekinge
Bioinformatics p2-p3-perl-regexes v2013-wim_vancriekingeBioinformatics p2-p3-perl-regexes v2013-wim_vancriekinge
Bioinformatics p2-p3-perl-regexes v2013-wim_vancriekinge
 
Working with text, Regular expressions
Working with text, Regular expressionsWorking with text, Regular expressions
Working with text, Regular expressions
 

Último

Presentation on how to chat with PDF using ChatGPT code interpreter
Presentation on how to chat with PDF using ChatGPT code interpreterPresentation on how to chat with PDF using ChatGPT code interpreter
Presentation on how to chat with PDF using ChatGPT code interpreternaman860154
 
04-2024-HHUG-Sales-and-Marketing-Alignment.pptx
04-2024-HHUG-Sales-and-Marketing-Alignment.pptx04-2024-HHUG-Sales-and-Marketing-Alignment.pptx
04-2024-HHUG-Sales-and-Marketing-Alignment.pptxHampshireHUG
 
From Event to Action: Accelerate Your Decision Making with Real-Time Automation
From Event to Action: Accelerate Your Decision Making with Real-Time AutomationFrom Event to Action: Accelerate Your Decision Making with Real-Time Automation
From Event to Action: Accelerate Your Decision Making with Real-Time AutomationSafe Software
 
Pigging Solutions Piggable Sweeping Elbows
Pigging Solutions Piggable Sweeping ElbowsPigging Solutions Piggable Sweeping Elbows
Pigging Solutions Piggable Sweeping ElbowsPigging Solutions
 
[2024]Digital Global Overview Report 2024 Meltwater.pdf
[2024]Digital Global Overview Report 2024 Meltwater.pdf[2024]Digital Global Overview Report 2024 Meltwater.pdf
[2024]Digital Global Overview Report 2024 Meltwater.pdfhans926745
 
My Hashitalk Indonesia April 2024 Presentation
My Hashitalk Indonesia April 2024 PresentationMy Hashitalk Indonesia April 2024 Presentation
My Hashitalk Indonesia April 2024 PresentationRidwan Fadjar
 
Key Features Of Token Development (1).pptx
Key Features Of Token Development (1).pptxKey Features Of Token Development (1).pptx
Key Features Of Token Development (1).pptxLBM Solutions
 
SQL Database Design For Developers at php[tek] 2024
SQL Database Design For Developers at php[tek] 2024SQL Database Design For Developers at php[tek] 2024
SQL Database Design For Developers at php[tek] 2024Scott Keck-Warren
 
Unblocking The Main Thread Solving ANRs and Frozen Frames
Unblocking The Main Thread Solving ANRs and Frozen FramesUnblocking The Main Thread Solving ANRs and Frozen Frames
Unblocking The Main Thread Solving ANRs and Frozen FramesSinan KOZAK
 
How to convert PDF to text with Nanonets
How to convert PDF to text with NanonetsHow to convert PDF to text with Nanonets
How to convert PDF to text with Nanonetsnaman860154
 
Enhancing Worker Digital Experience: A Hands-on Workshop for Partners
Enhancing Worker Digital Experience: A Hands-on Workshop for PartnersEnhancing Worker Digital Experience: A Hands-on Workshop for Partners
Enhancing Worker Digital Experience: A Hands-on Workshop for PartnersThousandEyes
 
The Codex of Business Writing Software for Real-World Solutions 2.pptx
The Codex of Business Writing Software for Real-World Solutions 2.pptxThe Codex of Business Writing Software for Real-World Solutions 2.pptx
The Codex of Business Writing Software for Real-World Solutions 2.pptxMalak Abu Hammad
 
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...Patryk Bandurski
 
SIEMENS: RAPUNZEL – A Tale About Knowledge Graph
SIEMENS: RAPUNZEL – A Tale About Knowledge GraphSIEMENS: RAPUNZEL – A Tale About Knowledge Graph
SIEMENS: RAPUNZEL – A Tale About Knowledge GraphNeo4j
 
Slack Application Development 101 Slides
Slack Application Development 101 SlidesSlack Application Development 101 Slides
Slack Application Development 101 Slidespraypatel2
 
Pigging Solutions in Pet Food Manufacturing
Pigging Solutions in Pet Food ManufacturingPigging Solutions in Pet Food Manufacturing
Pigging Solutions in Pet Food ManufacturingPigging Solutions
 
IAC 2024 - IA Fast Track to Search Focused AI Solutions
IAC 2024 - IA Fast Track to Search Focused AI SolutionsIAC 2024 - IA Fast Track to Search Focused AI Solutions
IAC 2024 - IA Fast Track to Search Focused AI SolutionsEnterprise Knowledge
 
How to Remove Document Management Hurdles with X-Docs?
How to Remove Document Management Hurdles with X-Docs?How to Remove Document Management Hurdles with X-Docs?
How to Remove Document Management Hurdles with X-Docs?XfilesPro
 
Scaling API-first – The story of a global engineering organization
Scaling API-first – The story of a global engineering organizationScaling API-first – The story of a global engineering organization
Scaling API-first – The story of a global engineering organizationRadu Cotescu
 
Understanding the Laravel MVC Architecture
Understanding the Laravel MVC ArchitectureUnderstanding the Laravel MVC Architecture
Understanding the Laravel MVC ArchitecturePixlogix Infotech
 

Último (20)

Presentation on how to chat with PDF using ChatGPT code interpreter
Presentation on how to chat with PDF using ChatGPT code interpreterPresentation on how to chat with PDF using ChatGPT code interpreter
Presentation on how to chat with PDF using ChatGPT code interpreter
 
04-2024-HHUG-Sales-and-Marketing-Alignment.pptx
04-2024-HHUG-Sales-and-Marketing-Alignment.pptx04-2024-HHUG-Sales-and-Marketing-Alignment.pptx
04-2024-HHUG-Sales-and-Marketing-Alignment.pptx
 
From Event to Action: Accelerate Your Decision Making with Real-Time Automation
From Event to Action: Accelerate Your Decision Making with Real-Time AutomationFrom Event to Action: Accelerate Your Decision Making with Real-Time Automation
From Event to Action: Accelerate Your Decision Making with Real-Time Automation
 
Pigging Solutions Piggable Sweeping Elbows
Pigging Solutions Piggable Sweeping ElbowsPigging Solutions Piggable Sweeping Elbows
Pigging Solutions Piggable Sweeping Elbows
 
[2024]Digital Global Overview Report 2024 Meltwater.pdf
[2024]Digital Global Overview Report 2024 Meltwater.pdf[2024]Digital Global Overview Report 2024 Meltwater.pdf
[2024]Digital Global Overview Report 2024 Meltwater.pdf
 
My Hashitalk Indonesia April 2024 Presentation
My Hashitalk Indonesia April 2024 PresentationMy Hashitalk Indonesia April 2024 Presentation
My Hashitalk Indonesia April 2024 Presentation
 
Key Features Of Token Development (1).pptx
Key Features Of Token Development (1).pptxKey Features Of Token Development (1).pptx
Key Features Of Token Development (1).pptx
 
SQL Database Design For Developers at php[tek] 2024
SQL Database Design For Developers at php[tek] 2024SQL Database Design For Developers at php[tek] 2024
SQL Database Design For Developers at php[tek] 2024
 
Unblocking The Main Thread Solving ANRs and Frozen Frames
Unblocking The Main Thread Solving ANRs and Frozen FramesUnblocking The Main Thread Solving ANRs and Frozen Frames
Unblocking The Main Thread Solving ANRs and Frozen Frames
 
How to convert PDF to text with Nanonets
How to convert PDF to text with NanonetsHow to convert PDF to text with Nanonets
How to convert PDF to text with Nanonets
 
Enhancing Worker Digital Experience: A Hands-on Workshop for Partners
Enhancing Worker Digital Experience: A Hands-on Workshop for PartnersEnhancing Worker Digital Experience: A Hands-on Workshop for Partners
Enhancing Worker Digital Experience: A Hands-on Workshop for Partners
 
The Codex of Business Writing Software for Real-World Solutions 2.pptx
The Codex of Business Writing Software for Real-World Solutions 2.pptxThe Codex of Business Writing Software for Real-World Solutions 2.pptx
The Codex of Business Writing Software for Real-World Solutions 2.pptx
 
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
 
SIEMENS: RAPUNZEL – A Tale About Knowledge Graph
SIEMENS: RAPUNZEL – A Tale About Knowledge GraphSIEMENS: RAPUNZEL – A Tale About Knowledge Graph
SIEMENS: RAPUNZEL – A Tale About Knowledge Graph
 
Slack Application Development 101 Slides
Slack Application Development 101 SlidesSlack Application Development 101 Slides
Slack Application Development 101 Slides
 
Pigging Solutions in Pet Food Manufacturing
Pigging Solutions in Pet Food ManufacturingPigging Solutions in Pet Food Manufacturing
Pigging Solutions in Pet Food Manufacturing
 
IAC 2024 - IA Fast Track to Search Focused AI Solutions
IAC 2024 - IA Fast Track to Search Focused AI SolutionsIAC 2024 - IA Fast Track to Search Focused AI Solutions
IAC 2024 - IA Fast Track to Search Focused AI Solutions
 
How to Remove Document Management Hurdles with X-Docs?
How to Remove Document Management Hurdles with X-Docs?How to Remove Document Management Hurdles with X-Docs?
How to Remove Document Management Hurdles with X-Docs?
 
Scaling API-first – The story of a global engineering organization
Scaling API-first – The story of a global engineering organizationScaling API-first – The story of a global engineering organization
Scaling API-first – The story of a global engineering organization
 
Understanding the Laravel MVC Architecture
Understanding the Laravel MVC ArchitectureUnderstanding the Laravel MVC Architecture
Understanding the Laravel MVC Architecture
 

Introduction to regular expressions

  • 1. Introduction to Regular Expressions Ben Brumfield THATCamp Texas 2011
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13. Shortcuts [^ ] not space [^] (depends on mode) everything . [a-zA-Z0-9_] word [^a-zA-Z0-9_] not word [0-9] digit [^0-9] not digit [ ] space Equivalent Class Name Shortcut
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20. Lab Reference at least n times { n ,} no more than m times {, m } between n and m times { n , m } exactly n { n } zero or more * one or more + zero or one ? Count Repeater everything . not space space not word word not digit digit Name Shortcut
  • 21.
  • 22.
  • 23.
  • 24.
  • 25.
  • 26.
  • 27.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32.
  • 33.
  • 34.