


Dumpvalue(3p)    Perl Programmers Reference Guide   Dumpvalue(3p)


NAME
       Dumpvalue - provides screen dump of Perl data.

SYNOPSIS
         use Dumpvalue;
         my $dumper = Dumpvalue->new;
         $dumper->set(globPrint => 1);
         $dumper->dumpValue(\*::);
         $dumper->dumpvars('main');
         my $dump = $dumper->stringify($some_value);

DESCRIPTION
   Creation
       A new dumper is created by a call

         $d = Dumpvalue->new(option1 => value1, option2 => value2)

       Recognized options:

       "arrayDepth", "hashDepth"
           Print only first N elements of arrays and hashes.  If
           false, prints all the elements.

       "compactDump", "veryCompact"
           Change style of array and hash dump.  If true, short
           array may be printed on one line.

       "globPrint"
           Whether to print contents of globs.

       "dumpDBFiles"
           Dump arrays holding contents of debugged files.

       "dumpPackages"
           Dump symbol tables of packages.

       "dumpReused"
           Dump contents of "reused" addresses.

       "tick", "quoteHighBit", "printUndef"
           Change style of string dump.  Default value of "tick"
           is "auto", one can enable either double-quotish dump,
           or single-quotish by setting it to """ or "'".  By
           default, characters with high bit set are printed as
           is.  If "quoteHighBit" is set, they will be quoted.

       "usageOnly"
           rudimentally per-package memory usage dump.  If set,
           "dumpvars" calculates total size of strings in
           variables in the package.

       unctrl
           Changes the style of printout of strings.  Possible
           values are "unctrl" and "quote".



perl v5.10.1                2009-10-12                          1





Dumpvalue(3p)    Perl Programmers Reference Guide   Dumpvalue(3p)


       subdump
           Whether to try to find the subroutine name given the
           reference.

       bareStringify
           Whether to write the non-overloaded form of the
           stringify-overloaded objects.

       quoteHighBit
           Whether to print chars with high bit set in binary or
           "as is".

       stopDbSignal
           Whether to abort printing if debugger signal flag is
           raised.

       Later in the life of the object the methods may be queries
       with get() method and set() method (which accept multiple
       arguments).

   Methods
       dumpValue
             $dumper->dumpValue($value);
             $dumper->dumpValue([$value1, $value2]);

           Prints a dump to the currently selected filehandle.

       dumpValues
             $dumper->dumpValues($value1, $value2);

           Same as " $dumper-"dumpValue([$value1, $value2]); >.

       stringify
             my $dump = $dumper->stringify($value [,$noticks] );

           Returns the dump of a single scalar without printing.
           If the second argument is true, the return value does
           not contain enclosing ticks.  Does not handle data
           structures.

       dumpvars
             $dumper->dumpvars('my_package');
             $dumper->dumpvars('my_package', 'foo', '~bar$', '!......');

           The optional arguments are considered as literal
           strings unless they start with "~" or "!", in which
           case they are interpreted as regular expressions
           (possibly negated).

           The second example prints entries with names "foo",
           and also entries with names which ends on "bar", or
           are shorter than 5 chars.





perl v5.10.1                2009-10-12                          2





Dumpvalue(3p)    Perl Programmers Reference Guide   Dumpvalue(3p)


       set_quote
             $d->set_quote('"');

           Sets "tick" and "unctrl" options to suitable values
           for printout with the given quote char.  Possible
           values are "auto", "'" and """.

       set_unctrl
             $d->set_unctrl('unctrl');

           Sets "unctrl" option with checking for an invalid
           argument.  Possible values are "unctrl" and "quote".

       compactDump
             $d->compactDump(1);

           Sets "compactDump" option.  If the value is 1, sets to
           a reasonable big number.

       veryCompact
             $d->veryCompact(1);

           Sets "compactDump" and "veryCompact" options
           simultaneously.

       set
             $d->set(option1 => value1, option2 => value2);

       get
             @values = $d->get('option1', 'option2');



























perl v5.10.1                2009-10-12                          3


