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| Declare::Constraints::Simple::Library::Scalar(3) | User Contributed Perl Documentation | Declare::Constraints::Simple::Library::Scalar(3) |
NAME
Declare::Constraints::Simple::Library::Scalar - Scalar ConstraintsSYNOPSIS
# match one of a set of regexes
my $some_regexes = Matches(qr/foo/, qr/bar/);
# allow only defined values
my $is_defined = IsDefined;
# between 5 and 50 chars
my $five_to_fifty = HasLength(5, 50);
# match against a set of values
my $command_constraint = IsOneOf(qw(create update delete));
# check for trueness
my $is_true = IsTrue;
# simple equality
my $is_foo = IsEq('foo');
DESCRIPTION
This library contains all constraints to validate scalar values.CONSTRAINTS
Matches(@regex)
my $c = Matches(qr/foo/, qr/bar/);
If one of the parameters matches the expression, this is true.
IsDefined()
True if the value is defined.HasLength([$min, [$max]])
Is true if the value has a length above $min (which defaults to 1> and, if supplied, under the value of $max. A simplemy $c = HasLength;
checks if the value has a length of at least 1.
IsOneOf(@values)
True if one of the @values equals the passed value. "undef" values work with this too, somy $c = IsOneOf(1, 2, undef);
will return true on an undefined value.
IsTrue()
True if the value evulates to true in boolean context.IsEq($comparator)
Valid if the value is "eq" the $comparator.SEE ALSO
Declare::Constraints::Simple, Declare::Constraints::Simple::LibraryAUTHOR
Robert 'phaylon' Sedlacek "<phaylon@dunkelheit.at>"LICENSE AND COPYRIGHT
This module is free software, you can redistribute it and/or modify it under the same terms as perl itself.| 2006-09-11 | perl v5.32.1 |
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