1Declare::Constraints::SUismeprleC:o:nLtDirebicrblauartryee:d:::SPCceoarnllsatrDr(oa3ci)unmtesn:t:aStiimopnle::Library::Scalar(3)
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NAME

6       Declare::Constraints::Simple::Library::Scalar - Scalar Constraints
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SYNOPSIS

9         # match one of a set of regexes
10         my $some_regexes = Matches(qr/foo/, qr/bar/);
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12         # allow only defined values
13         my $is_defined = IsDefined;
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15         # between 5 and 50 chars
16         my $five_to_fifty = HasLength(5, 50);
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18         # match against a set of values
19         my $command_constraint = IsOneOf(qw(create update delete));
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21         # check for trueness
22         my $is_true = IsTrue;
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24         # simple equality
25         my $is_foo = IsEq('foo');
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DESCRIPTION

28       This library contains all constraints to validate scalar values.
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CONSTRAINTS

31       Matches(@regex)
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33         my $c = Matches(qr/foo/, qr/bar/);
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35       If one of the parameters matches the expression, this is true.
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37       IsDefined()
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39       True if the value is defined.
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41       HasLength([$min, [$max]])
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43       Is true if the value has a length above $min (which defaults to 1> and,
44       if supplied, under the value of $max. A simple
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46         my $c = HasLength;
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48       checks if the value has a length of at least 1.
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50       IsOneOf(@values)
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52       True if one of the @values equals the passed value. "undef" values work
53       with this too, so
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55         my $c = IsOneOf(1, 2, undef);
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57       will return true on an undefined value.
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59       IsTrue()
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61       True if the value evulates to true in boolean context.
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63       IsEq($comparator)
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65       Valid if the value is "eq" the $comparator.
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SEE ALSO

68       Declare::Constraints::Simple, Declare::Constraints::Simple::Library
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AUTHOR

71       Robert 'phaylon' Sedlacek "<phaylon@dunkelheit.at>"
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74       This module is free software, you can redistribute it and/or modify it
75       under the same terms as perl itself.
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79perl v5.8.8                   Decl2a0r0e6:-:0C9o-n1s1traints::Simple::Library::Scalar(3)
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