Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

DDJ Test for Perl

by huguei (Scribe)
on Aug 22, 2007 at 19:18 UTC ( [id://634486]=perlquestion: print w/replies, xml ) Need Help??

huguei has asked for the wisdom of the Perl Monks concerning the following question:

Hi!
I just received an update from DDJ new articles in their website, and this issue there is a "Test Your Knowledge of Perl".
Obviously I run through it, but I got two strange questions/answers. I couldn't answer the numbers 41 and 46, and the answers doesn't seem to be ok!. What do you think?
The link: http://www.ddj.com/linux-open-source/201801549

(I don't give here the questions and answers... to not spoil the test ;) )

Replies are listed 'Best First'.
Re: DDJ Test for Perl
by sgt (Deacon) on Aug 22, 2007 at 19:36 UTC

    Interesting, thanks. I think that the test if well dosed overall and that it can tell if someone does not know Perl.

    Still I think that the phrasing of some questions is poor especially 41. 46 is ok. Years ago I trained mayself to read the /s modifier as superdot (a term used by J Friedl in "mastering regular expressions" IIRC) and the /m mod. as multi-line-anchors ;)

    cheers --stephan
      Yes, maybe my english isn't good enough ;(
Re: DDJ Test for Perl
by zentara (Archbishop) on Aug 22, 2007 at 20:01 UTC
    I don't think 41 was written correctly, and I read English fairly well. First none of the given answers work.

    I'm not really a human, but I play one on earth. Cogito ergo sum a bum
Re: DDJ Test for Perl
by suaveant (Parson) on Aug 22, 2007 at 19:40 UTC
    I think 41 is just wrong. You'd need a join or at least something like $,="\n";print @a to do what he is asking

                    - Ant
                    - Some of my best work - (1 2 3)

      Question #41 is poorly worded. For example, in "add them to the end of each entry" what does the "them" refer to -- the values (the array elements) or newlines? I thought the former when I read it but the answer indicates the latter was the intent.

      With that said I believe that English grammar rules would hint at removing the "that do not contain newlines" part of the sentence to determine what the "them" refers to.

      Update: Massive rewrite and added spoiler tags.

        I think that by "each" you have to assume array elements

                        - Ant
                        - Some of my best work - (1 2 3)

Re: DDJ Test for Perl
by Aim9b (Monk) on Aug 23, 2007 at 00:23 UTC
    Thank you for pointing out the perl test. I just read it expecting to answer about 10-20 correctly. Imagine my joy when I correctly answered 42 of them. I guess the books are working for me. The monestary gets a lot of the credit too.
    I got number 41 correct, but I see where one of the monks said it would not work, so I guess I'm confused too. Also, I answered fork instead of system to 25, so I have a little more studying to do in that area. Thanks again.
      system implicitly forks and execs. If you want to "launch a child process to run a program", then fork is half the solution.
        Your bias is showing.
        system implicitly forks and execs.
        On my computer, system does neither of those.
Re: DDJ Test for Perl
by GrandFather (Saint) on Aug 28, 2007 at 04:44 UTC

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: perlquestion [id://634486]
Approved by suaveant
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others cooling their heels in the Monastery: (7)
As of 2024-03-28 19:22 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found