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The Problem With Sigils
Sigils (such as PerlLanguage 's $scalar @array %hash, RubyLanguage 's @member, etc) encode type or scope information in variable names, and therefore remind some people of HungarianNotation . However, one of the big complaints about HungarianNotation is that, if one changes the type, then one must also (global search and replace) change the name, a complaint that doesn't apply to sigils, since the name and the type are one and the same. Sigils in Ruby and Perl are not just hints for the compiler; remove them, and the program no longer works the same as before (or maybe at all). In this sense, they're not the same as HungarianNotation .
If you ever want to annoy a native speaker of a language you're learning, translate idioms from your primary language literally into the other language. For example, if you're learning Spanish and you come across something surprising or perplexing, yell out "¡Santa vaca!" as loudly as you can within earshot of native Spanish speakers. It's easy to see similar behavior from novice programmers who haven't learned the idioms of their new language, as well. Baby Perl can be clunky due to lack of understanding of language features , but it can also be clunky due to lack of understanding of language idioms.
From Novice to Adept: Embracing Idioms
Architecture and Design, and how I learned what I know about bot
One of my team asked me today for book recommendations on software design and architecture, and I thought about it, and then I realised, well, I haven't really read any. Which sort of struck me as surprising, because I've got a head half full of information and ideas about how to do it (the other half being full of perl ... probably ...) so it's got to have come from somewhere. Now, admittedly, I've been programming since 1988, first for a hobby and then for money and as a hobby, so I've probably forgotten how I learned a lot of things, not to mention a fair few of the things themselves.
Talk: Swine Before Perl
The Swine Before Perl In November 2001 I gave an invited talk at the inaugural Lightweight Languages conference that has since become somewhat notorious (in netspace, it is said to be “ kickassing genial ”). DrDobb's Journal was kind enough to record the conference and professionally edit the tracks. They unfortunately misplaced the audio track, and said they were unable to locate the backups.Perl 101 - Index
Thanks for visiting perl101.org. We hope to provide you with everything that every Perl programmer should know. Our goal is not to cover everything in Perl, or make you an expert. What we've found, though, is that many Perl programmers don't know what they don't know. Perl101.org hopes to change that. The source for this site is kept on github at http://github.com/petdance/perl101 .
In the discussions which prompted me to write On Parsing Perl 5 , I've read many misconceptions of how Perl 5 works. The strangest example is a comment on Lambda the Ultimate which contains an incorrect suggestion that Perl 5 subroutines take the source code of the program as an argument to resolve ambiguous parsing . Someone elsewhere gave the example that Perl gurus preface answers to the question "Is Perl 5 interpreted or compiled?"
How a Perl 5 Program Works
Copyright © 2004 Gene Michael Stover. All rights reserved. Permission to copy, store, & view this document unmodified & in its entirety is granted. Another programmer mentioned that, though he likes Lisp, he found Perl to be easier for basic data processing tasks.
Perlish Lisp
Famous Perl One-Liners Explained, Part II: Line Numbering
This is the second part of a seven-part article on famous Perl one-liners . In this part I will create various one-liners for line numbering . See part one for introduction of the series. Famous Perl one-liners is my attempt to create " perl1line.txt " that is similar to " awk1line.txt " and " sed1line.txt " that have been so popular among Awk and Sed programmers. The article on famous Perl one-liners will consist of at least seven parts:
The 81% Solution
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A Modern Style of Programming
The best-kept secret in programming conferences, especially in a
I know, the economy sucks, and everything is expensive these days. It’s even worse for you, a polyglot programmer with a serious programming-language obsession. You prowl Proggit , lounge at LtU , and occasionally step on over to Stack Overflow . But it’s just not enough.I work on LangPop.com for fun. I make a tiny bit of money from the adsense there, but nothing much to speak of. Unlike the TIOBE folks, I don't sell my data to anyone.
Angry Perl Users
Functional Pearl: Type-safe pattern combinators
Functional Pearl: Type-safe pattern combinators , by Morten Rhiger: Macros still have not made their way into typed higher-order programming languages such as Haskell and Standard ML. Therefore, to extend the expressiveness of Haskell or Standard ML gradually, one must express new linguistic features in terms of functions that fit within the static type systems of these languages. This is particularly challenging when introducing features that span across multiple types and that bind variables.The A-Z of Programming Languages: Perl
Computerworld is undertaking a series of investigations into the most widely-used programming languages. Previously we have spoken to Alfred v. Aho of AWK fame , S. Tucker Taft on the Ada 1995 and 2005 revisions , Microsoft about its server-side script engine ASP , Chet Ramey about his experiences maintaining Bash , Bjarne Stroustrup of C++ fame and to Charles H. Moore about the design and development of Forth .Computerworld is undertaking a series of investigations into the most widely-used programming languages. Previously we have spoken to Alfred v. Aho of AWK fame , S. Tucker Taft on the Ada 1995 and 2005 revisions , Microsoft about its server-side script engine ASP , Chet Ramey about his experiences maintaining Bash , Bjarne Stroustrup of C++ fame and to Charles H. Moore about the design and development of Forth .