Warren, Sure, I will definitely share the document. best, Shaji ------------------------------------------------------------------------------- Your talent is God's gift to you. What you do with it is your gift back to God. -------------------------------------------------------------------------------
________________________________ From: Warren James - jawarr <james.war...@acxiom.com> To: '*Shaji Kalidasan*' <shajiin...@yahoo.com>; timothy adigun <2teezp...@gmail.com>; Charles DeRykus <dery...@gmail.com> Cc: Perl Beginners <beginners@perl.org> Sent: Wednesday, 29 May 2013 7:38 PM Subject: RE: Perl error codes and warnings Shaji - Upon completion, is this something which you could please consider providing to us/the list audience as well?: “…a document with suitable code snippets which includes the most common Perl programming errors and warnings.” THANKS JJW From:*Shaji Kalidasan* [mailto:shajiin...@yahoo.com] Sent: Wednesday, May 29, 2013 2:34 AM To: timothy adigun; Charles DeRykus Cc: Perl Beginners Subject: Re: Perl error codes and warnings Thanks a bunch Timothy and Charles for guiding me to wonderful resources within the Perl system. use diagnostics qw/-verbose/; it slipped my attention. (Courtesy : Charles) 'perldoc -f qw (Courtesy : Timothy) Actually I am a guiding junior Perl programmers (having little or no prior experience in Perl) and I am in the process of preparing a document with suitable code snippets which includes the most common Perl programming errors and warnings. Your valuable input is highly appreciated and I cherish the treasure which I learned from you. best, Shaji ------------------------------------------------------------------------------- Your talent is God's gift to you. What you do with it is your gift back to God. ------------------------------------------------------------------------------- ________________________________ From:timothy adigun <2teezp...@gmail.com> To: *Shaji Kalidasan* <shajiin...@yahoo.com> Cc: Perl Beginners <beginners@perl.org> Sent: Wednesday, 29 May 2013 9:26 AM Subject: Re: Perl error codes and warnings Hi Shaji, On Wed, May 29, 2013 at 4:19 AM, *Shaji Kalidasan* <shajiin...@yahoo.com> wrote: Greetings, Where can I get more information on Perl's most common error codes? Is there a single source (repository/resource) for such most frequently encountered error codes? [code-1] use strict; use warnings; my @names = qw/bat, ball, %&!*, king, (^@), eagle, zebra/; with "qw", you don't use a 'comma' to separate the element of the array. Because, the element are separated by space. So, the correct thing to do is: my @names = qw/bat ball %&!* king (^@) eagle zebra/; foreach (@names) { > print "$_\n" if /\w/; >} >[/code-1] > >[output-1] >Possible attempt to separate words with commas at C:/Users/shaji >kalidasan/workspace/juno-sr1/shaji/Shaji Code Snippets/hari.pl line 4. >bat, >ball, >king, >eagle, >zebra >[/output-1] > >[code-2] >use strict; >use warnings; > >my @names = qw/orange apple %&!*# banana (^@) grapes mango/; Also, with "qw", you can't use '#', the use warnings gives a warning that the string contain '#'. So, to use your expression, you can do like so: my @names = split/\s/, q/orange apple %&!*# banana (^@) grapes mango/; foreach (@names) { > print "$_\n" if /\w/; >} >[/code-2] > >[output-2] >orange >apple >banana >grapes >mango >Possible attempt to put comments in qw() list at C:/Users/shaji >kalidasan/workspace/juno-sr1/shaji/Shaji Code Snippets/hari.pl line 4. >[/output-2] > >So considering these two programs mentioned above, I am getting the following >warning messages > >1) Possible attempt to separate words with commas at C:/Users/shaji >kalidasan/workspace/juno-sr1/shaji/Shaji Code Snippets/hari.pl line 4. > >2) Possible attempt to put comments in qw() list at C:/Users/shaji >kalidasan/workspace/juno-sr1/shaji/Shaji Code Snippets/hari.pl line 4. > >Please suggest some pointers or resources for this type of frequently >encountered error codes/warnings and its possible meanings. In fact, if you do 'perldoc -f qw' from the Command Line Interface, the last paragraph says: A common mistake is to try to separate the words with comma or to put comments into a multi-line "qw"-string. For this reason, the "use warnings" pragma and the --ww switch (that is, the $^W variable) produces warnings if the STRING contains the "," or the "#" character. Hope this helps *************************************************************************** The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank You. ****************************************************************************
