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Elements of Programming with Perl (Chapter 10)
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Date Published: 2002-10-22
Regular expressions (singular regex or plural
regexen) are a powerful device for general text processing. Perl's particular
brand of regular expression language is more powerful and rich in features than
almost any other flavor or regular expression. Unfortunately, this additional
power comes with a price of additional complexity. In this chapter, we will examining
Perl's regular expression language in some detail, starting with just the basics
and moving on to discuss most of the features of the regex language in recent
version of Perl.
Click here to read more...
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| (Added: Tue Oct 22 2002 Hits: 38 Rating: 0.00 Votes: 0)
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Elements of Programming with Perl (Chapter 1)
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Date Published: 2002-10-15
Computers are mindless devices capable
of doing what they are told. Before we talk about the activities of programming
we need to have a basic understanding of what a program is and the role it plays
in turning and expensive pieve of mindless hardware into a useful device.
Click here to read more...
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| (Added: Tue Oct 15 2002 Hits: 40 Rating: 0.00 Votes: 0)
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Graphics Programming with Perl (Chapter 4)
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Date Published: 2002-10-08
Unless you already have all the graphics
you will ever need, you have to create them; and if you already had everything
you needed, you wouldn't be reading this book, so I assume that you do need to
create some graphics yourself. This part of the book covers how to do this. Throughout
the book you will find many ways in which to create graphics, such as charts,
images for your web pages, or animations. In this particular chapter we'll have
a look at the groundwork for most computer graphics generation: drawing. In
the most basic sense, drawing graphics consists of the manipliation of certain
drawing primitives, such as circles, reclangles, lines and text. No matter
which drawing package you use, you will find the same, or very similar, primites,
methods, and functions. All drawing packages also have in common an coordinate
spae in which to work, and the objects and primitives you woth with are all expressed
in terms of this coordinate space.
Click here to read more...
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| (Added: Tue Oct 08 2002 Hits: 60 Rating: 0.00 Votes: 0)
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Graphics Programming with Perl (Chapter 1)
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Date Published: 2002-09-17
Because of Perl's gluing ability, there are several interfaces to graphics manipulation libraries and programs in the form of modules. Other packages have been written that make use of these modules to create graphics of a higher level, for example to create charts. Together, the number of these tools has grown sufficiently to allow the tackling of many graphics programming tasks in Perl.
Click here to read more...
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Demystifying CGI: Part 1 - Things to Know About CGI
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Date Published: 2002-09-14
CGI stands for "Common Gateway Interface". It is the interface between a browser and a server that allows a browser to submit a dynamic request. CGI is not a language; specifically, it is not Perl. Most languages have some means for dealing with CGI requests, whether it be Perl, C, C++, sh, Tcl, Java, or Python. The generally accepted term for a program that deals with CGI is "CGI program" or "CGI script" -- boasting having written "a CGI" is a faux pas (unless, of course, you rewrote the protocol).
Click here to read more...
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| (Added: Sat Sep 14 2002 Hits: 40 Rating: 0.00 Votes: 0)
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Web Development with Apache and Perl (Chapter 6)
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Date Published: 2002-09-14
It seems that every few months there are high-profile cases of credit card theft
over the Internet: a popular site reports that its customer database was cracked,
or a new exploit is discovered that lets a malicious application read inofrmation
from browsers. As with the case in the physical realm, the bulk of crimes are
low-profile and not reported to police. After a pleasant holiday season of shopping
over the Web, strange charges turn up on a credit card , and the card holder calls
their bank to have the charges removed and to get a new account number issued.
Click here to read more...
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| (Added: Sat Sep 14 2002 Hits: 66 Rating: 0.00 Votes: 0)
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Hash Slices
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Date Published: 2002-09-13
The Challenge (as posted on comp.lang.perl.misc)
I once posted to c.l.p.misc (comp.lang,perl.misc) this code and i asked what good is it?
@array = qw( a b c d ) ;
@array{ @array } = ( [ @array ] ) x @array ;
Click here to read more...
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| (Added: Fri Sep 13 2002 Hits: 48 Rating: 0.00 Votes: 0)
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Book Chapter : Perl Developer's Dictionary (Part 1 of 2)
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Date Published: 2002-08-28
Understanding how to use regular expressions is fundamental to any Perl programmer. The essential purpose of a regular expression is to match a pattern, and Perl provides two operators for doing just that: m// (match) and s/// (substitute). (The ins and outs of those operators are covered in their own entries.)
See Part 2
Click here to read more...
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| (Added: Wed Aug 28 2002 Hits: 33 Rating: 0.00 Votes: 0)
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