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package Repl::Spec::Args::NamedArg;
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2
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3
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1
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1
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3007
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use strict;
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1
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3
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1
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56
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4
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1
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1
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6
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use warnings;
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1
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2
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1
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34
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5
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1
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1
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6
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use Carp;
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1
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2
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1
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1268
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6
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7
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# Parameters:
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8
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# - Name of the parameter.
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9
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# - Type spec.
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10
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# - Default value.
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11
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# - Optional flag.
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12
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sub new
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13
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{
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14
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1
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1
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0
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10
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my $invocant = shift;
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15
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1
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33
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8
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my $class = ref($invocant) || $invocant;
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16
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17
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1
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50
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5
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my $paramName = shift || die "Parameter name expected.";
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18
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1
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50
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6
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my $typeSpec = shift || die "Type spec expected.";
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19
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1
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2
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my $value = shift;
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20
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1
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3
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my $optional = shift;
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21
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22
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1
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6
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my $specName = sprintf("%s=%s", $paramName, $typeSpec->name());
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23
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24
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1
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2
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my $self = {};
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25
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1
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9
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$self->{PARAMNAME} = $paramName;
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26
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1
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2
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$self->{TYPESPEC} = $typeSpec;
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27
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1
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2
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$self->{VALUE} = $value;
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28
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1
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2
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$self->{OPTIONAL} = $optional;
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29
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1
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3
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$self->{SPECNAME} = $specName;
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30
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31
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1
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4
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return bless $self, $class;
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32
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}
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33
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34
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sub specname()
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35
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{
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36
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0
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0
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0
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0
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my $self = shift;
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37
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0
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0
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return $self->{SPECNAME};
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38
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}
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39
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40
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# Parameters:
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41
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# - An argument list (ref to array).
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42
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# - a position.
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43
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# - A context!
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44
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sub guard
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45
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{
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46
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4
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4
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0
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8
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my $self = shift;
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47
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4
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50
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10
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my $args = shift || die "Argument list expected.";
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48
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4
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6
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my $pos = shift;
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49
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4
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50
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9
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my $ctx = shift || die "Context expected";
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50
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51
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4
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5
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my $i = $pos;
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52
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4
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4
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my $argslen = scalar(@$args);
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53
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4
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18
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while ($i < $argslen)
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54
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{
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55
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6
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100
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14
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if(ref($args->[$i]) eq "Repl::Core::Pair")
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56
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{
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57
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2
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4
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my $pair = $args->[$i];
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58
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2
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8
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my $pairname = $pair->getLeft();
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59
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2
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7
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my $pairvalue = $pair->getRight();
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60
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61
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2
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50
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10
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if($pairname eq $self->{PARAMNAME})
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62
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{
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63
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2
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3
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my $type = $self->{TYPESPEC};
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64
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2
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10
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return $type->guard($pairvalue);
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65
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}
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66
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}
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67
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4
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9
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$i = $i + 1;
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68
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}
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69
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70
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2
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50
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9
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if($self->{OPTIONAL})
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71
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{
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72
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2
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4
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my $type = $self->{TYPESPEC};
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73
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2
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50
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17
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return $type->guard($self->{VALUE}) if $self->{VALUE};
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74
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0
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0
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return $self->{VALUE};
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75
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}
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76
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else
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77
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{
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78
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0
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0
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croak sprintf("Missing named argument '%s'.", $self->{PARAMNAME});
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79
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}
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80
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}
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81
|
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82
|
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sub name
|
83
|
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{
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84
|
2
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2
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0
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4
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my $self = shift;
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85
|
2
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10
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return $self->{PARAMNAME};
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86
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}
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87
|
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88
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1;
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