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XML Parsers - speed / performance and ease-of-use
Hi all I'm trying to parse an XML file that looks like: <?xml version="1.0" standalone="yes" ?> <abc> <def> <ghi> <jkl>information</jkl> </ghi> <important> <data> <info1>info 1</info1> <info2>info 2</info2> </data> <data>... -
Anyone know what changed in Perl 5.8 regarding command execution?
Hi all. I have written a script that runs another Perl script via: open CMD, "$command |"; $command will equal, e.g., (with the double quotes) "perl" "C:\Documents and Settings\wardmm\My Documents\cygwin\home\wardmm\perl\symdg-detail.pl" Running under Perl 5.8 it works fine. Perl 5.6... -
Having an option to write to a file or STDOUT
Hi all I'm trying to think of the best way to write a script that can either output to a file or to STDOUT if no file name is supplied. For example, script.pl -o file.txt would send the output to a file but script.pl would just print to the screen. Inside script.pl I was thinking of... -
Should i "use CGI" for a simple HTML file output?
Hi all Just a "style" question. CGI is a standard module and appears to be a bit of an easy way to write HTML. So, rather than: print "<h1>Heading</h1>\n"; I can just: [code]print h1("Heading");[\code] which seems a little less low-level. Is this what people normally do? Please note, this... -
How do read STDOUT and STDERR together
Hello I have a (hopefully) small problem reading output from a command that throws off both STDOUT and STDERR. When run on the terminal, these two files are interspersed correctly. The output takes the form of: STDOUT blah blah blah STDOUT processing file2 STDERR processing failed... -
A Way to Print all Variables in a Namespace
Hello all I want to be able to find out which variables have been defined in a namespace. For example, package XYZ; $x = 10; $y = 12; $z = 20; package ABC; # Something goes here that can find everything under XYZ:: Thanks in advance -
Quick way to parse 50,000+ line XML file
Hello all I've written a Perl script using XML::Simple to parse an XML file generated from a program running under a UNIX line command. The file is over 50K lines longs and I need to parse 2 of them. The problem is the time required. It is taking around 15 minutes just to convert the XML... -
Returning 2 values repetitively (as a list?)
Hello. I wish to write a function that returns two values and can be used in a while loop or similar. For example: while( ($a, $b) = myfunc() ) { print "a=$a\tb=$b\n" } And this would print, eg, a=1 b=2 a=6 b=9 a=1 b=10 until the function decided it had returned enough... -
How to find out if an executable is in my path
Hello all I am converting some old shell scripts into Perl (yay!) and have come up with a small snag. The old UNIX scripts do things like if ! whence symdg > /dev/null; then echo "symdg not found in path" return 1 fi I also want this stuff to work on NT/2000 :-( so the... -
Using data passed by reference to a subroutine
Hello - me again.... Take this example code: my @array = (1, 2, 3); pass_array( \@array ); sub pass_array ($) { my $aref = shift; $$aref[1]++ } This should work and add one to element [1] in the array @array. My question is, how can I write my subs more legibly by being able to do... -
How to handle a module not able to be located
Hello all I wish to code some Perl scripts which can gracefully handle modules not being present. If I just do "use xyz::abc" the script fails compilation. I need to be able to test if a subroutine exists (use defined, I suppose) and if not, just have a guess. use...
