NAME

Number::Tolerant::Type - a type of tolerance

VERSION

version 1.706

SYNOPSIS

METHODS

valid_args

  my @args = $type_class->valid_args(@_);

If the arguments to valid_args are valid arguments for this type of tolerance, this method returns their canonical form, suitable for passing to "construct". Otherwise this method returns false.

construct

  my $object_guts = $type_class->construct(@args);

This method is passed the output of the "valid_args" method, and should return a hashref that will become the guts of a new tolerance.

parse

  my $tolerance = $type_class->parse($string);

This method returns a new, fully constructed tolerance from the given string if the given string can be parsed into a tolerance of this type.

number_re

  my $number_re = $type_class->number_re;

This method returns the regular expression (as a qx construct) used to match number in parsed strings.

normalize_number

  my $number = $type_class->normalize_number($input);

This method will decide whether the given input is a valid number for use with Number::Tolerant and return it in a canonicalized form. Math::BigInt objects are returned intact. Strings holding numbers are also returned intact. Strings that appears to be fractions are converted to Math::BigRat objects.

Anything else is considered invalid, and the method will return false.

variable_re

  my $variable_re = $type_class->variable_re;

This method returns the regular expression (as a qr construct) used to match the variable in parsed strings.

When parsing "4 <= x <= 10" this regular expression is used to match the letter "x."

AUTHOR

Ricardo Signes <rjbs@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2004 by Ricardo Signes.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Number::Tolerant

perl -MCPAN -e shell
install Number::Tolerant