Re: segmentation fault
On Dec 21, 5:37 pm, shlo...@shlomifish.org (Shlomi Fish) wrote: On Wed, 21 Dec 2011 09:48:19 -0600 Robert Wohlfarth rbwohlfa...@gmail.com wrote: On Tue, Dec 20, 2011 at 11:25 AM, Motaz SAAD motaz.s...@gmail.com wrote: I am a beginner in perl and I have segmentation fault in my code. the code run perfectly for the until the third iteration and it produce segmentation fault in the inner while loop in the 3rd iteration of the outer while loop. Would you please help me with hints. Your help will be appreciated If it were me, I would add print statements inside of the loop (see below). When it segfaults, you see which two prints the error comes between. Then move those closer and closer until you find the line causing the error. That narrows down the scope. It looks like you started down that path already... You can achieve the same effect much more easily and without polluting your code using Devel::Trace : *http://search.cpan.org/dist/Devel-Trace/ There's alsohttp://search.cpan.org/dist/Devel-Trace-More/and my ownhttp://search.cpan.org/dist/Devel-LineTrace/(which does something a bit different than the others) which may prove of use. Regards, Shlomi Fish -- - Shlomi Fish http://www.shlomifish.org/ Star Trek: We, the Living Dead -http://shlom.in/st-wtld No one calls Xena the warrior princess “Zeena” to her face and survives. Luckily for you, she hasn’t visited the modern day United States yet. Please reply to list if it's a mailing list post -http://shlom.in/reply. Hello, Thanks very much, it is really helpful tool. my script spend 10 min running until I get segmentation fault error, but when I traced my script and it spend 2 days and still running !!! I run tracing using -d flag (perl -d:Trace p.pl) is this normal ? Thanks, Best Regards, -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Regex : Extract data between { } spanning in multplie lines
Switching to multiline mode ~/regex/m doesnt seem to be working.
Ex file.txt:
A1 {@ a d e \n a b c}
A2 {@ 1 {2 3} \n a b c \n d e f}
I need to extract these separately :
{@ a d e a b c }
{@ 1 {2 3} \n a b c \n d e f}
perl -lne 'print $1 if '~/^[A-Z0-9]+\s\{.*$/m' file.txt
I can extract data by grouping after \{ in regex but how to span over
multiple lines and make this work. Need pointers.
iand
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Comparing Perl Hashes
Hi all,
I have a questions of comparing two hashes.
%hash1={a=2,b=3,c=4,d=5}
%hash2={a=7,b=8,c=9,d=0)
I have to ensure that from %hash2 the value is increased by 5(2-7 and
3-8) for a,b. I dont want to compare the all the values of
hash2(for exp-d=0).I want to push this to a library(preferably a
single method) so that I can reuse it. Is there a better way to do
this?.
Can anybody help me in this regard? Any source code will be of great
help.
Regards
Pradeep
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Re: segmentation fault
Hi Motaz, On Thu, 22 Dec 2011 10:57:48 -0800 (PST) Motaz SAAD motaz.s...@gmail.com wrote: Hello, Thanks very much, it is really helpful tool. You're welcome. my script spend 10 min running until I get segmentation fault error, but when I traced my script and it spend 2 days and still running !!! I run tracing using -d flag (perl -d:Trace p.pl) is this normal ? Well, the -d:Trace flag slows down the execution, but it shouldn't be such a dramatic difference. I guess you've ran into a Heisenbug: http://en.wikipedia.org/wiki/Unusual_software_bug#Heisenbug I'm not sure what's causing it, but I guess you can try doing manual traces using prints. Regards, Shlomi Fish -- - Shlomi Fish http://www.shlomifish.org/ Chuck Norris/etc. Facts - http://www.shlomifish.org/humour/bits/facts/ And the top story for today: wives live longer than husbands because they are not married to women. — Colin Mochrie in Who’s Line is it, Anyway? Please reply to list if it's a mailing list post - http://shlom.in/reply . -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Comparing Perl Hashes
Hi Pradeep,
On Fri, 23 Dec 2011 00:11:22 -0800 (PST)
Pradeep Patra smilesonisa...@gmail.com wrote:
Hi all,
I have a questions of comparing two hashes.
%hash1={a=2,b=3,c=4,d=5}
%hash2={a=7,b=8,c=9,d=0)
This is the wrong way of initialising hash variables. You're assigning hash
references to hashes instead of even-sized lists. Try:
%hash1 = (a=2,b=3,c=4,d=5);
%hash2 = (a=7,b=8,c=9,d=0);
I have to ensure that from %hash2 the value is increased by 5(2-7 and
3-8) for a,b. I dont want to compare the all the values of
hash2(for exp-d=0).I want to push this to a library(preferably a
single method) so that I can reuse it. Is there a better way to do
this?.
Can anybody help me in this regard? Any source code will be of great
help.
You can simply do:
sub are_hashes_ok
{
for my $key ('a', 'b')
{
if ($hash1{$key} + 5 != $hash2{$key})
{
return;
}
}
return 1;
}
Regards,
Shlomi Fish
Regards
Pradeep
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Re: Regex : Extract data between { } spanning in multplie lines
On 12/23/2011 01:56 AM, iand wrote:
Ex file.txt:
A1 {@ a d e \n a b c}
A2 {@ 1 {2 3} \n a b c \n d e f}
I need to extract these separately :
{@ a d e a b c }
{@ 1 {2 3} \n a b c \n d e f}
http://shop.oreilly.com/product/9780596528126.do
HTH,
David
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How to confirm user account
Hi Please visit http://blogs.perl.org/. If I register my account, I get the following message. To confirm your account, please click on or cut and paste the following URL into a web browser: http://blogs.perl.org/mt/mt-cp.fcgi?__mode=do_confirmreturn_to=http%3A%2F%2Fblogs.perl.org%2Femail=rockstar01%40y7mail.comblog_id=1id=1610token=**iTebiC***chWNa If I don't use MOVABLE TYPE, Is there any CPAN module to do this? Or I must write this with perl by myself. I have searched CPAN, but I could not find any module to do it. _ Thanks in advance. --- Inexperienced FreeBSD user: Level 4 masayoshi Ayumi Kinoshita http://tinyurl.com/63zg3op -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: segmentation fault
Sent from my LG phone Motaz SAAD motaz.s...@gmail.com wrote: On Dec 21, 5:37 pm, shlo...@shlomifish.org (Shlomi Fish) wrote: On Wed, 21 Dec 2011 09:48:19 -0600 Robert Wohlfarth rbwohlfa...@gmail.com wrote: On Tue, Dec 20, 2011 at 11:25 AM, Motaz SAAD motaz.s...@gmail.com wrote: I am a beginner in perl and I have segmentation fault in my code. the code run perfectly for the until the third iteration and it produce segmentation fault in the inner while loop in the 3rd iteration of the outer while loop. Would you please help me with hints. Your help will be appreciated If it were me, I would add print statements inside of the loop (see below). When it segfaults, you see which two prints the error comes between. Then move those closer and closer until you find the line causing the error. That narrows down the scope. It looks like you started down that path already... You can achieve the same effect much more easily and without polluting your code using Devel::Trace : *http://search.cpan.org/dist/Devel-Trace/ There's alsohttp://search.cpan.org/dist/Devel-Trace-More/and my ownhttp://search.cpan.org/dist/Devel-LineTrace/(which does something a bit different than the others) which may prove of use. Regards, Shlomi Fish -- - Shlomi Fish http://www.shlomifish.org/ Star Trek: We, the Living Dead -http://shlom.in/st-wtld No one calls Xena the warrior princess “Zeena” to her face and survives. Luckily for you, she hasn’t visited the modern day United States yet. Please reply to list if it's a mailing list post -http://shlom.in/reply. Hello, Thanks very much, it is really helpful tool. my script spend 10 min running until I get segmentation fault error, but when I traced my script and it spend 2 days and still running !!! I run tracing using -d flag (perl -d:Trace p.pl) is this normal ? Thanks, Best Regards, -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Testing for Missing Packages
Hello everyone. Here is my question: What is the preferred way to test a system for installed modules? For example, I have a Perl program I would like to distribute. It depends on a number of modules from CPAN and I would like an easy way to test for the existence of those modules. I suppose the user could always run the program and then install them whenever he gets an error about the packages not being found, but it feels like there should be a friendlier way to address that. Is there a common way in Perl to say, “This program depends on these packages and requires them to be installed before running?” And if so, is there a common, automated way to prompt the user to install any of those missing packages? Thanks in advanced and happy holidays everyone! -- ejmr 南無妙法蓮華經 -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Testing for Missing Packages
Hi Eric, On Sat, 24 Dec 2011 20:23:17 -0500 Eric James Michael Ritz lobbyjo...@gmail.com wrote: Hello everyone. Here is my question: What is the preferred way to test a system for installed modules? For example, I have a Perl program I would like to distribute. It depends on a number of modules from CPAN and I would like an easy way to test for the existence of those modules. I suppose the user could always run the program and then install them whenever he gets an error about the packages not being found, but it feels like there should be a friendlier way to address that. Is there a common way in Perl to say, “This program depends on these packages and requires them to be installed before running?” And if so, is there a common, automated way to prompt the user to install any of those missing packages? Yes, there is. See: * http://search.cpan.org/dist/Module-Build/ * http://search.cpan.org/dist/Module-Install/ * http://search.cpan.org/dist/ExtUtils-MakeMaker/ Regards, Shlomi Fish Thanks in advanced and happy holidays everyone! -- ejmr 南無妙法蓮華經 -- - Shlomi Fish http://www.shlomifish.org/ Freecell Solver - http://fc-solve.shlomifish.org/ You can never truly appreciate The Gilmore Girls until you’ve watched it in the original Klingon. Please reply to list if it's a mailing list post - http://shlom.in/reply . -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
