CODEWITHSUNDEEP
perldebugging
Tom Z
Tom Z

Reputation: 83

about X command (display variables) in perl debugger

I am wondering how the big X command works in Perl debugger. So I have the following silly.pl script:

#!/usr/bin/perl -w
use strict;
my $var1 = 99;
print "$var1\n";

I run perl -d silly.pl, and step to the 4th line. There I type in the debugger: 

X var1

But nothing shows up. How should I use X to display the value of var1? (If I remove use strict; and don't use my, then I can get X var1 working, but that seems not a solution.)

With Many Thanks!

Upvotes: 3

Views: 3851

Answers (2)

tuxuday
tuxuday

Reputation: 3037

hitting h in the debugger show this.

  V [Pk [Vars]]  List Variables in Package.  Vars can be ~pattern or !pattern.
  X [Vars]       Same as "V current_package [Vars]".

Upvotes: 2

Denis Ibaev
Denis Ibaev

Reputation: 2520

The X command prints current package variables, e.g. declared as our. For lexical scope variables use x or y (needs PadWalker module installed) commands.

Upvotes: 4

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