1Declare::Constraints::SUismeprleC:o:nLtDirebicrblauartryee:d:::SPCceoarnllsatrDr(oa3ci)unmtesn:t:aStiimopnle::Library::Scalar(3)
2
3
4

NAME

6       Declare::Constraints::Simple::Library::Scalar - Scalar Constraints
7

SYNOPSIS

9         # match one of a set of regexes
10         my $some_regexes = Matches(qr/foo/, qr/bar/);
11
12         # allow only defined values
13         my $is_defined = IsDefined;
14
15         # between 5 and 50 chars
16         my $five_to_fifty = HasLength(5, 50);
17
18         # match against a set of values
19         my $command_constraint = IsOneOf(qw(create update delete));
20
21         # check for trueness
22         my $is_true = IsTrue;
23
24         # simple equality
25         my $is_foo = IsEq('foo');
26

DESCRIPTION

28       This library contains all constraints to validate scalar values.
29

CONSTRAINTS

31   Matches(@regex)
32         my $c = Matches(qr/foo/, qr/bar/);
33
34       If one of the parameters matches the expression, this is true.
35
36   IsDefined()
37       True if the value is defined.
38
39   HasLength([$min, [$max]])
40       Is true if the value has a length above $min (which defaults to 1> and,
41       if supplied, under the value of $max. A simple
42
43         my $c = HasLength;
44
45       checks if the value has a length of at least 1.
46
47   IsOneOf(@values)
48       True if one of the @values equals the passed value. "undef" values work
49       with this too, so
50
51         my $c = IsOneOf(1, 2, undef);
52
53       will return true on an undefined value.
54
55   IsTrue()
56       True if the value evulates to true in boolean context.
57
58   IsEq($comparator)
59       Valid if the value is "eq" the $comparator.
60

SEE ALSO

62       Declare::Constraints::Simple, Declare::Constraints::Simple::Library
63

AUTHOR

65       Robert 'phaylon' Sedlacek "<phaylon@dunkelheit.at>"
66

68       This module is free software, you can redistribute it and/or modify it
69       under the same terms as perl itself.
70
71
72
73perl v5.34.0                  Decl2a0r2e1:-:0C7o-n2s2traints::Simple::Library::Scalar(3)
Impressum