1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
package Catmandu::Counter;
use Catmandu::Sane;
our $VERSION = '1.2024';
use Moo::Role;
use namespace::clean;
has count => (is => 'rwp', default => sub {0});
sub inc_count {
my ($self, $n) = @_;
$n //= 1;
$self->_set_count($self->count + $n);
}
sub dec_count {
my ($self, $n) = @_;
$n //= 1;
my $count = $self->count - $n;
$self->_set_count($count > 0 ? $count : 0);
}
sub reset_count {
my $self = $_[0];
$self->_set_count(0);
}
1;
__END__
=pod
=head1 NAME
Catmandu::Counter - A Base class for modules who need to count things
=head1 SYNOPSIS
package MyPackage;
use Moo;
with 'Catmandu::Counter';
sub calculate {
my ($self) = @_;
$self->inc_count;
#...do stuff
}
package main;
my $x = MyPackage->new;
$x->calculate;
$x->calculate;
$x->calculate;
print "Executed calculate %d times\n" , $x->count;
=head1 ATTRIBUTES
=head2 count
The current value of the counter.
=head1 METHODS
=head2 inc_count()
=head2 inc_count(NUMBER)
Increment the counter.
=head2 dec_count()
=head2 dec_count(NUMBER)
Decrement the counter.
=head2 reset_count()
Reset the counter to zero.
=head1 SEE ALSO
L<Catmandu::Exporter>
=cut
|
