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=head1 NAME |
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Declare::Constraints::Simple::Library::Numerical - Numerical Constraints |
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=cut |
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package Declare::Constraints::Simple::Library::Numerical; |
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use warnings; |
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use strict; |
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use Declare::Constraints::Simple-Library; |
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use Scalar::Util (); |
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=head1 SYNOPSIS |
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# test for number-conformity |
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my $looks_like_number = IsNumber; |
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# only integers |
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my $is_int = IsInt; |
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=head1 DESCRIPTIONS |
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This library contains the constraints needed to validate numerical values. |
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=head1 CONSTRAINTS |
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=head2 IsNumber() |
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True if the value is a number according to Ls |
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C. |
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=cut |
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constraint 'IsNumber', |
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sub { |
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return sub { |
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return _false('Undefined Value') unless defined $_[0]; |
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return _result(Scalar::Util::looks_like_number($_[0]), |
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'Does not look like Number'); |
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}; |
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}; |
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=head2 IsInt() |
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True if the value is an integer. |
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=cut |
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constraint 'IsInt', |
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sub { |
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return sub { |
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return _false('Undefined Value') unless defined $_[0]; |
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return _result(scalar($_[0] =~ /^-?\d+$/), 'Not an Integer'); |
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}; |
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}; |
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=head1 SEE ALSO |
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L, L |
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=head1 AUTHOR |
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Robert 'phaylon' Sedlacek Cphaylon@dunkelheit.atE> |
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=head1 LICENSE AND COPYRIGHT |
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This module is free software, you can redistribute it and/or modify it |
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under the same terms as perl itself. |
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=cut |
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1; |