PERL Practical Extraction and Report Language

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PERL Practical Extraction and Report Language

Presented by Bryden Tsukano
Brent Wong Yu Lin Yang
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Brief History of PERL (1)

• The Creation of PERL
• Version 1.0
• Created by Larry Wall
• October 18th, 1987
• posted to the usenet group comp.sources

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Brief History of PERL (2)

• PERL 2.0 (new features) 1988
• PERL 3.0 (under GNU public license) 1989
• GNU license free
• New features
• chop lists
• enhancement in code debugging
• binary data handling

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Brief History of PERL (3)

• Programming PERL (1991)
• Randal Schwartz and Larry Wall
• O'Reilly Associates
• PERL 4.0 released at the same year
• Many other PERL books was published after that

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Brief History of PERL (4)

• PERL 5.0 The Major Revision
• many changes were made
• introduction of Objects
• Interface remained almost the same
• Gain popularity with CPAN
• Comprehensive PERL Archive Network 1995
• PERL 6.0 will be introduced with more features

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About Larry Wall

• Perl 0 (1986)
• First introduced to his associates
• believer in free software
• Unisys
• Never created for money

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The Beauty of Perl

• Object-Oriented
• Strong at file and text manipulation
• Borrows features from C

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Interpreted

• an interpreted language
• testing and debugging much simpler
• Execution is slow

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Free

• Perl is free
• free software movement
• Source code, optional modules, and documentation
• GNU Public License

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Systems

• Mainly used on Unix
• Cross-platform
• Other systems Windows, Macintosh, Linux

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Who uses it?

• Business owners
• Webmasters
• Everyone

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Business Owners

• Ease of use
• Inexpensive

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Webmasters

• Access to the Comprehensive Perl Archive Network
  (CPAN)
• Inexpensive
• Secure

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Companies Who Use Perl
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Output Please enter your name Nickles
Hello Nickles!
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Comparisons

• Java
• Class HelloWorld
• public static void main(String args)
• System.out.println(Hello World)

• Perl
• print Hello World\n