advanced perl programming ebook

... Chapter 10 Fun with Perl Section 10.1 Obfuscation Section 10.2 Just Another Perl Hacker Section 10.3 Perl Golf Section 10.4 Perl Poetry Trang 4Advanced Perl Programming, Second Editionby ... you've read Learning Perl and Programming Perl and wonder where to go from there, this book is for you It'll help you climb to the next level of P erl wisdom If you've been programming in P erl ... become amore accomplished programmer O 'Reilly's most high-level P erl tutorial to date, Advanced Perl Programming, Second Edition teaches you all the complex techniques for production-ready P

Ngày tải lên: 07/04/2014, 15:00

... interface The program is a complete demonstration of some of the methods we’ve described for GNU/Linux programming and illustrated in shorter programs.This program is written more like “real-world” code, ... See one of the many excellent references on network application development, such as UNIX Network Programming,Volume 1: Networking APIs—Sockets and XTI, by W Richard Stevens (Prentice Hall, 1997),

Ngày tải lên: 17/10/2013, 19:15

... and actually executing the program, you can find out much more A.1 Static Program Analysis Some programming errors can be detected using static analysis tools that analyze the program’s source ... invoke GCC with -Wall and -pedantic, the compiler issues warnings about risky or possibly erroneous programming constructions By eliminating such constructions, you’ll reduce the risk of program bugs, ... command options, you can cause GCC to issue warnings about many different types of questionable programming constructs.The -Wall option enables most of these checks For example, the compiler will

Ngày tải lên: 21/01/2014, 07:20

... Trang 1Advanced UNIX Programmingwith Linux I 1 Getting Started 2 Writing Good GNU/Linux Software 3 Processes 4 ... C and C++ source code, compile that code, and debug the result If you’re already accustomed to programming under Linux, you can skip ahead to Chapter 2, “Writing Good GNU/Linux Software;” pay ... examples in this book are in C, except when demonstrating a particular feature or complication of C++ programming.We also assume that you know how to perform basic operations in the Linux command shell,

Ngày tải lên: 21/01/2014, 07:20

... Trang 2Advanced PHP ProgrammingTrang 4Advanced PHP ProgrammingSams Publishing, 800 East 96th Street, Indianapolis, Indiana 46240 ... Comments 29API Documentation 30Further Reading 35 Trang 92 Object-Oriented Programming Through Design Patterns 37Introduction to OO Programming 38Inheritance 40 Encapsulation 41Static (or Class) Attributes ... domain Trang 25A programming language needs to meet the following six criteria to be usable inbusiness-critical applications:n Fast prototyping and implementation n Support for modern programming

Ngày tải lên: 21/01/2014, 09:20

... benefitfrom the OO approach OO programming represents a paradigm shift from procedural programming, which isthe traditional technique for PHP programmers In procedural programming, you havedata (stored ... This is a c++-style comment n Shell/Perl-style comments—With this type of comment, the pound sign (#) isthe comment delimiter Here’s an example of a Shell/Perl-style comment: # This is a shell-style ... of a Shell/Perl-style comment: # This is a shell-style comment In practice, I avoid using Shell/Perl-style comments entirely I use C-style comments forlarge comment blocks and C++-style comments

Ngày tải lên: 21/01/2014, 09:20

... reposi-> mv Advanced_PHP Advanced_PHP.old > cvs -d /var/cvs checkout Advanced_PHP cvs checkout: Updating Advanced_PHP cvs checkout: Updating Advanced_PHP/examples # manually inspect your new Advanced_PHP ... that contains your files: direc-> cd Advanced_PHP > cvs -d /var/cvs import Advanced_PHP advanced_php start cvs import: Importing /var/cvs/books/Advanced_PHP/examples Trang 9No conflicts ... correctly add advanced_php.jpg to your repository, you would execute the following: > cvs add advanced_php.jpg > cvs commit -m ‘ this books cover art ’ advanced_php.jpg > cvs admin -kab advanced_php.jpg

Ngày tải lên: 26/01/2014, 09:20

... </BODY></HTML> ” ; echo $output; cache($output); ?> If you are old enough to have learned Web programming with Perl-based CGI scripts,this likely sends a shiver of painful remembrance down your spine! ... of the persistent state in somethinglike mod_perlis that it is possible to irrevocably trash your interpreter for future requests or to have improperly initialized variables take unexpected values ... or across process invocations will probablyseem natural to programmers coming from Java or mod_perl In PHP, all user data struc-tures are destroyed at request shutdown.This means that with the

Ngày tải lên: 26/01/2014, 09:20

... Website.This is a popular strategy for Java programmers and (to a lesser extent) mod_perl developers Both Java and mod_perlembed a persistent runtime into Apache In this runtime,scripts and pages are ... gettheir name because their syntax is designed to largely mimic that of Perl’s regular expres-sions PCREs are not actually part of Perl at all, but are a completely independent com-patibility library ... Computational Reuse Inside PHP PHP itself employs computational reuse in a number of places PCREs Perl Compatible Regular Expressions (PCREs) consist of preg_match(), preg_replace(),preg_split(),preg_grep(),

Ngày tải lên: 26/01/2014, 09:20

... no master/master solution currentlyperforms very well Most require shared storage to operate properly, which means thatI/O bottlenecks are not eliminated In addition, there is overhead introduced ... standardized interface for making function or method calls over a network Virtually every aspect of Web programming contains RPCs HTTP requests made byWeb browsers to Web servers are RPC-like, as are

Ngày tải lên: 26/01/2014, 09:20

... one at a time.This is in contrast to a language such as Perl, where all these potential represen- tations can coexist (this is how in Perl you can have a variable that has entirely different representations ... compared this to the == and eq operators in Perl, which are both transitive.They are both transitive, though, because they are both typed comparison. == in Perl coerces both operands into numbers ... which bill themselves as general-purpose “enterprise” languages) implement strong typing, whereas Perl, PHP, and JavaScript implement weak typing. PHP is both dynamically typed and weakly typed.

Ngày tải lên: 26/01/2014, 09:20

... Trang 1Ch 12: More Advanced Linear Programming Concepts and Methods Applying Linear Programming to Those Investments in Which The Simplifying Assumptions ... overall risk measure such as ‘variance could be targeted and minimized. Trang 16Advanced LP Applications: Summary Linear programming can be used to solve selection problems from amongst competing ... conflicting wealth, environmental and social concerns  All analyses must recognize risk. Trang 7Advanced LP Techniques Applied to A Complex Investment Problem : An Example, ‘Power Gen Inc’.

Ngày tải lên: 23/03/2014, 04:20

... how Perl works perldoc perldoc perldoc perlrun Exercises 1 What is the path to your Perl installation? 2 Explain the difference between a compiler and an interpreter 3 Classify the Perl ... 10% Perl example− 1 Today’s "Blue-Plate Special"... Books are given in standard citation form The two books listed here, Learning Perl and Programming Perl, are the basic bibles for Perl ... develop and alter Perl Programming for Biologists D Curtis Jamison Copyright  2003 John Wiley & Sons, Inc ISBN: 0-4 7 1-4 305 9-5 7 8 An Introduction to Perl Perl...Introduction

Ngày tải lên: 25/03/2014, 10:29

... Trang 1Advanced Python ProgrammingTrang 2Advanced Programming Topics in Python A brief introduction to Python Working with the filesystem Operating system interfaces Programming with ... Python Working with the filesystem Operating system interfaces Programming with Threads Network programming Database interfaces Restricted execution Extensions in C This is primarily a tour of ... distribution Goal is to highlight many of Python’s capabilities Trang 3This tutorial is aimed at an advanced audience I assume prior knowledge of topics in Operating Systems and Networks Prior experience

Ngày tải lên: 25/03/2014, 10:39

... 1Lecture 20-2 Perl Programming Perl (Practical Extraction and Report Language) is a powerful and adaptable scripting language Perl became very popular in early 90’s as web became a reality Perl is ... other capabilities Perl programs are not compiled but interpreted Perl interpreter in your unix system can be found by typing
where perl It may show /usr/local/bin/perl /usr/bin/perl giving the ... /usr/bin/perl giving the path of the perl interpreter Perl interpreter is used to run perl programs Let us start with a simple Hello world program in perl #!/usr/local/bin/perl print "Hello World\n";

Ngày tải lên: 29/04/2014, 14:45

... NULLs whenever possible If a table has too many NULL-able columns, it is probably not normalized properly Try to use a NULL only for a value that is missing now, but which will be resolved later Even ... values into the encoding schemes for that column, as discussed in as discussed in Section 5.2 of SQL Programming Style, ISBN 0-12-088797-5, on encoding schemes. Trang 7A normalized database will tend ... different tapes The habit of designing this way carried over to disk systems, since the procedural programming languages were still the same The same nonkey attribute in more than one table is probably

Ngày tải lên: 06/07/2014, 09:20