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Full Discussion: Coding the cron
Top Forums Shell Programming and Scripting Coding the cron Post 302886845 by azherkn3 on Tuesday 4th of February 2014 02:51:57 AM
Old 02-04-2014
tat was awesome zaxxon thanks
 

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Data::Dumper::Concise::Sugar(3) 			User Contributed Perl Documentation			   Data::Dumper::Concise::Sugar(3)

NAME
Data::Dumper::Concise::Sugar - return Dwarn @return_value SYNOPSIS
use Data::Dumper::Concise::Sugar; return Dwarn some_call(...) is equivalent to: use Data::Dumper::Concise; if (wantarray) { my @return = some_call(...); warn Dumper(@return); return @return; } else { my $return = some_call(...); warn Dumper($return); return $return; } but shorter. If you need to force scalar context on the value, use Data::Dumper::Concise::Sugar; return DwarnS some_call(...) is equivalent to: use Data::Dumper::Concise; my $return = some_call(...); warn Dumper($return); return $return; If you need to force list context on the value, use Data::Dumper::Concise::Sugar; return DwarnL some_call(...) is equivalent to: use Data::Dumper::Concise; my @return = some_call(...); warn Dumper(@return); return @return; If you want to label your output, try DwarnN use Data::Dumper::Concise::Sugar; return DwarnN $foo is equivalent to: use Data::Dumper::Concise; my @return = some_call(...); warn '$foo => ' . Dumper(@return); return @return; If you want to output a reference returned by a method easily, try $Dwarn $foo->bar->{baz}->$Dwarn is equivalent to: my $return = $foo->bar->{baz}; warn Dumper($return); return $return; If you want to format the output of your data structures, try DwarnF my ($a, $c) = DwarnF { "awesome: $_[0] not awesome: $_[1]" } $awesome, $cheesy; is equivalent to: my @return = ($awesome, $cheesy); warn DumperF { "awesome: $_[0] not awesome: $_[1]" } $awesome, $cheesy; return @return; If you want to immediately die after outputting the data structure, every Dwarn subroutine has a paired Ddie version, so just replace the warn with die. For example: DdieL 'foo', { bar => 'baz' }; DESCRIPTION
use Data::Dumper::Concise::Sugar; will import Dwarn, $Dwarn, DwarnL, DwarnN, and DwarnS into your namespace. Using Exporter, so see its docs for ways to make it do something else. Dwarn sub Dwarn { return DwarnL(@_) if wantarray; DwarnS($_[0]) } $Dwarn $Dwarn = &Dwarn $DwarnN $DwarnN = &DwarnN DwarnL sub Dwarn { warn Data::Dumper::Concise::Dumper @_; @_ } DwarnS sub DwarnS ($) { warn Data::Dumper::Concise::Dumper $_[0]; $_[0] } DwarnN sub DwarnN { warn '$argname => ' . Data::Dumper::Concise::Dumper $_[0]; $_[0] } Note: this requires Devel::ArgNames to be installed. DwarnF sub DwarnF (&@) { my $c = shift; warn &Data::Dumper::Concise::DumperF($c, @_); @_ } TIPS AND TRICKS
global usage Instead of always just doing: use Data::Dumper::Concise::Sugar; Dwarn ... We tend to do: perl -MData::Dumper::Concise::Sugar foo.pl (and then in the perl code:) ::Dwarn ... That way, if you leave them in and run without the "use Data::Dumper::Concise::Sugar" the program will fail to compile and you are less likely to check it in by accident. Furthmore it allows that much less friction to add debug messages. method chaining One trick which is useful when doing method chaining is the following: my $foo = Bar->new; $foo->bar->baz->Data::Dumper::Concise::Sugar::DwarnS->biff; which is the same as: my $foo = Bar->new; (DwarnS $foo->bar->baz)->biff; SEE ALSO
You probably want Devel::Dwarn, it's the shorter name for this module. perl v5.16.2 2011-01-20 Data::Dumper::Concise::Sugar(3)
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