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Class::Workflow::Util:UsertContributed Perl DocClass::Workflow::Util::Delta(3)

NAME
       Class::Workflow::Util::Delta - calculate	deltas between workflow
       instances

SYNOPSIS
	       my $next	= $transition->apply( $i );

	       my $d = Class::Workflow::Util::Delta->new(
		       from => $i,
		       to   => $next,
	       );

	       foreach my $field ( keys	%{ $d->changes } ) {
		       my $change = $d->changes->{$field};
		       print "$field changed from $change->{from} to $change->{to}\n";
	       }

DESCRIPTION
       Usually you need	to calculate deltas between workflow instances in
       order to	normalize the database of history changes so that there	are no
       duplicate fields.

       This module lets	you create an object that represents the change
       between any two instances (not necessarily related), allowing you to
       represent a history step.

       See Class::Workflow::YAML

perl v5.32.1			  2009-05-15   Class::Workflow::Util::Delta(3)

NAME | SYNOPSIS | DESCRIPTION

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