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package Data::Result; |
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use Modern::Perl; |
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use Moo; |
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use MooX::Types::MooseLike::Base qw(:all); |
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use Carp qw(croak); |
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use namespace::clean; |
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use overload |
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fallback=>1, |
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'""'=>sub { $_[0]->msg }, |
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bool=>sub { $_[0]->is_true }, |
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; |
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our $VERSION='1.0001'; |
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=head1 NAME |
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Data::Result - Handling true and false in a better way! |
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=head1 SYNOPSIS |
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use Modern::Perl; |
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use Data::Result; |
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# just true |
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my $result=Data::Result->new(is_true=>0); |
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if($result) { |
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print "Yup its true!\n"; |
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} |
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# True with data |
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$result=Data::Result->new(is_true=>1,data=>'Yup This is true!'); |
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if($result) { |
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print $result->data,"\n"; |
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} |
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# just flase |
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$result=Data::Result->new(is_true=>0); |
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if($result) { |
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print $result->data,"\n"; |
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} else { |
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print "well, something went wrong!\n"; |
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} |
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# handle false, but give us an error! |
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$result=Data::Result->new(is_true=>0,msg=>'this is our message'); |
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if($result) { |
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print $result->data,"\n"; |
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} else { |
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print "$result\n"; |
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} |
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=head1 DESCRIPTION |
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Handling true and false isn't always enough. This alows true and false to encapsulate things as a simple state. |
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58
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=cut |
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# This method runs after the new constructor |
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sub BUILD { |
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my ($self)=@_; |
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} |
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# this method runs before the new constructor, and can be used to change the arguments passed to the module |
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around BUILDARGS => sub { |
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my ($org,$class,@args)=@_; |
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return $class->$org(@args); |
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}; |
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73
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=head1 Object Constructor Arguments |
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Data::Result provides the following constructor arguments |
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Required arguments: |
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is_true: true or fale |
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Optional arguments |
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data: Data this object contains |
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msg: A human readable string representing this object. |
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extra: another slot to put data in |
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=cut |
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has is_true=>( |
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is=>'rw', |
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isa=>Bool, |
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required=>1, |
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); |
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has msg=>( |
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is=>'rw', |
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isa=>Str, |
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default=>'', |
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lazy=>1, |
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); |
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102
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has data=>( |
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is=>'rw', |
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lazy=>1, |
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); |
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has extra=>( |
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is=>'rw', |
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lazy=>1, |
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); |
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112
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=head1 OO Methods |
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114
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=over 4 |
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116
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=item * my $data=$result->get_data |
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118
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Simply a wrapper for $result->data |
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120
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=cut |
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122
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0
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0
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1
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sub get_data { $_[0]->data } |
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=item * if($result->is_false) { ... } |
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126
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Inverts $self->is_true |
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128
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=cut |
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130
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0
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sub is_false { !$_[0]->is_true } |
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=item * my $result=Data::Result->new_true($data,$extra); |
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Wrapper for |
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my $result=Data::Result->new(is_true=>1,data=>$data,extra=>$data); |
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138
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=cut |
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140
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sub new_true { |
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4
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1
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my ($self,$data,$extra)=@_; |
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return $self->new(is_true=>1,data=>$data,extra=>$extra); |
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} |
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145
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=item * my $result=Data::Result->new_false($msg,$extra); |
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147
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Wrapper for |
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149
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my $result=Data::Result->new(is_true=>1,msg=>$msg,extra=>$data); |
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151
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=cut |
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153
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sub new_false { |
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my ($self,$msg,$extra)=@_; |
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croak '$msg is a required argument' unless defined($msg); |
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4
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return $self->new(is_true=>0,msg=>$msg,extra=>$extra); |
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} |
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159
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sub DEMOLISH { |
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5058
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my ($self)=@_; |
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return unless defined($self); |
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delete $self->{extra}; |
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delete $self->{data}; |
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378
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delete $self->{msg}; |
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} |
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167
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=back |
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169
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=head1 AUTHOR |
170
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171
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Mike Shipper |
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173
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=cut |
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1; |