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Exercises on PERL

by paragkalra (Scribe)
on Sep 11, 2009 at 08:58 UTC ( #794723=perlquestion: print w/replies, xml ) Need Help??
paragkalra has asked for the wisdom of the Perl Monks concerning the following question:

Hello All,

I have finished reading "Learning PERL (O'reilly publications)" and now I am very much familiar with PERL.

To put further hands on I want to know a book containing many examples/exercises on all the PERL topics along with their solutions.

Please suggest.

Replies are listed 'Best First'.
Re: Exercises on PERL
by GrandFather (Sage) on Sep 11, 2009 at 09:48 UTC

    A really good form of exercise for learning Perl is to attempt to answer Seekers of Perl Wisdom questions. You don't need to post your answer, although some times you may wish to raise a question of your own when your solution doesn't behave as expected.

    The nice thing about SoPW questions is that many of them are in the context of real problems and that you very often get a wide range of solutions with discussion of their merits. The other thing is that there is a huge number of them - sufficient that with a little searching you are sure to find questions that are of interest to you and match your current experience level.

    True laziness is hard work
Re: Exercises on PERL
by moritz (Cardinal) on Sep 11, 2009 at 09:13 UTC
    I don't know of any good books with many exercises, but I'd recommend writing programs "for real".

    You learn a lot from scratching your own itches, looking up needed functions or modules as necessary.

    You can also start answering beginners questions here at perlmonks, I was surprised how much I learned in that progress.

    Perl 6 - links to (nearly) everything that is Perl 6.
Re: Exercises on PERL
by cdarke (Prior) on Sep 11, 2009 at 09:11 UTC
    Welcome to Perl, but you should quickly be told that using PERL is frowned upon. The language is "Perl" and the interpreter is "perl". Never PERL.

    For your purposes I recommend The Perl Cookbook, also from O'Reilly. However, nothing beats writing an application for your own use. Perl is huge and can be used for almost anything. You probably don't need to know all of Perl, concentrate on the areas that will help you most with your job.
Re: Exercises on PERL
by FunkyMonk (Canon) on Sep 11, 2009 at 10:24 UTC
    Many years ago, there was a Perl quiz of the week (actually it was two quizzes: regular and expert). The regular quiz was aimed at coders who had finished reading Learning Perl.

    There are archives of the regular quiz problems & solutions and the same again for the expert problems & solutions

    There was another mailing list to discuss each of the problems and its archive can be found here.

    I hesitate to add this but Ruby also had a (much longer running) quiz of the week. You can find their list of problems (some are the same as the Perl questions) here.

Re: Exercises on PERL
by almut (Canon) on Sep 11, 2009 at 09:30 UTC

    You might find the course notes on useful  (they have exercises — though I don't think there are immediate solutions along with the exercises... just hints).

Re: Exercises on PERL
by 1Nf3 (Pilgrim) on Sep 11, 2009 at 09:29 UTC

    The logical next step would be "Intermediate Perl". It's a great book, and it picks up right where "Learning Perl" has left.


Re: Exercises on PERL
by ELISHEVA (Prior) on Sep 11, 2009 at 15:30 UTC

    This thread has given you two types of advice: sources to read and learn more ("Intermediate Perl", "Advanced Programing with Perl") and encouragement to engage in a real problem.

    It is important to realize that these two kinds of advice are not alternatives, but rather two different approaches that go hand in hand. Reading the recommended books will challenge you to do things you might not have thought of doing before. This is also an important time to start developing your personal programming style. These books will help you think through the choices.

    On the other hand, all formal programming books, no matter how challenging, present a sanitized view of the world of programming. The goal of an exercise is to illustrate a concept, and it can't do that well if there is a lot of noise due to "real life". But if you want to learn programming to "do" something (like earn a living or save the world), then one will eventually have to deal with the messy world of real life programming problems. There are some things you can only learn to handle by experience: how to cope with fuzzy problem definitions, incomplete APIs, bugs in 3rd party modules, poorly written documentation, among others.

    It is so easy to think that one is not quite ready for "real problems". In reality, you can never know enough to be ready, so it is better to just jump in. Doing "real problems" together with a book can help you put the book in perspective and understand what is real and what is idealized. When you start applying book knowledge to your own "real life" problems, you will find things hard going from time to time, or even all of the time (at first), but difficulties aren't because you don't know enough. Rather they are because you still don't know how to use what you already know.

    Finally, to master anything well one must be passionate about it. Working on your own problems (or developing something cool for someone you care about) is a great way to put your heart into programming. The more you want to make the program work the more you will push yourself. We have monks here that have clung for years to things that were very hard for them simply because the end goal, be it a website, game, or CD organizer, meant so much to them.

    Best of luck on your programming journey, beth

Re: Exercises on PERL
by Bloodnok (Vicar) on Sep 11, 2009 at 10:25 UTC
    Other excellent suggestions aside, I personally did (& still do:-) find Mastering Algorithms with Perl extremely helpful/useful/educational.

    A user level that continues to overstate my experience :-))
Re: Exercises on PERL
by bv (Friar) on Sep 11, 2009 at 15:51 UTC

    If you are having trouble finding real coding problems, this site seems to have a good selection of real problems to work in the language of your choice: Code Kata.

    Happy Perling!

    print pack("A25",pack("V*",map{1919242272+$_}(34481450,-49737472,6228,0,-285028276,6979,-1380265972)))
Re: Exercises on PERL
by grizzley (Chaplain) on Sep 11, 2009 at 09:40 UTC
    I agree with others - real coding is really good method. I would add suggestion, there is nothing more motivating to dig through documentation, as little competition :)
Re: Exercises on PERL
by merlyn (Sage) on Sep 11, 2009 at 23:25 UTC
Re: Exercises on PERL
by leocharre (Priest) on Sep 11, 2009 at 13:30 UTC

    The answer is no.

    The time is now.

    The place is here.

    It is now time to code.

    Do it.

    If you're on a posix system, create a script to automate something you do regularly (maybe on a second user account, and not as root)

    If you have a hosting account, write a cgi that shows random pictures or choosed from a random website to jump to.

    No more quizes. Code.
    You will fail, you will go back to the book you are now very much familiar with, PERL, and you will debug.. and pull out your hair, and fail, and read, and fail, and ...

    Then you will succeed, and you will get a gold star on your forehead and fairy dust.

Re: Exercises on PERL
by biohisham (Priest) on Sep 11, 2009 at 23:57 UTC
Re: Exercises on PERL
by planetscape (Chancellor) on Sep 12, 2009 at 03:10 UTC

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