NAME Number::Misc - handy utilities for numbers SYNOPSIS use Number::Misc ':all'; is_numeric('x'); # false to_number('3,000'); # 3000 commafie('3000'); # 3,000 zero_pad(2, 10); # 0000000002 rand_in_range(3, 10); # a random number from 3 to 10, inclusive is_even(3) # true is_odd(4); # true DESCRIPTION Number::Misc provides some miscellaneous handy utilities for handling numbers. These utilities handle processing numbers as strings, determining basic properties of numbers, or selecting a random number from a range. INSTALLATION Number::Misc can be installed with the usual routine: perl Makefile.PL make make test make install FUNCTIONS is_numeric Returns true if the given scalar is a number. An undefined value returns false. A "number" is defined as consisting solely of numerals (i.e. the characters 0-9), with at most one decimal, and at most a single leading minus or plus sign. is_numeric('3'); # true is_numeric('-3'); # true is_numeric('+3'); # true is_numeric('0003'); # true is_numeric('0.003'); # true is_numeric('0.00.3'); # false is_numeric('3,003'); # false is_numeric(' 3'); # false is_numeric(undef); # false option: convertible If you want to test if the string could be a number if it were run through to_number() then use the convertible option. is_numeric('3,003', convertible=>1); # true is_numeric(' 3', convertible=>1); # true is_numeric('0.00.3', convertible=>1); # false to_number Converts a string to a number by removing commas and spaces. If the string can't be converted, returns undef. Some examples: to_number(' 3 '); # returns 3 to_number(' 3,000 '); # returns 3000 to_number('whatever'); # returns undef option: always_number If the string cannot be converted to a number, return 0 instead of undef. For example, this call: to_number('whatever', always_number=>1) returns 0. commafie Converts a number to a string representing the same number but with commas commafie(2000); # 2,000 commafie(-2000); # -1,000 commafie(2000.33); # 2,000.33 commafie(100); # 100 option: sep The sep option lets you set what to use as a separator instead of a comma. For example, if you want to : instead of , you would do that like this: commafie('2000', sep=>':'); which would give you this: 2:000 zero_pad Prepends zeroes to the number to make it a specified length. The first param is the number, the second is the target length. If the length of the number is equal to or longer than the given length then nothing is changed. zero_pad(2, 3); # 002 zero_pad(2, 10); # 0000000002 zero_pad(444, 2); # 444 rand_in_range Given lower and upper bounds, returns a random number greater than or equal to the lower bound and less than or equal to the upper. Works only on integers. rand_in_range(3, 10); # a random number from 3 to 10, inclusive rand_in_range(-1, 10); # a random number from -1 to 10, inclusive is_even / is_odd is_even returns true if the number is even. is_odd returns true if the number is odd. Nonnumbers and decimals return undef. Other modules Here are a few other modules available on CPAN that do many of the same things as Number::Misc: Number::Format Test::Numeric Math::Random TERMS AND CONDITIONS Copyright (c) 2012 by Miko O'Sullivan. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. This software comes with NO WARRANTY of any kind. AUTHOR Miko O'Sullivan miko@idocs.com VERSION Version 1.0 July, 2012 Initial release. Version 1.1 April 25, 2014 Fixed problem in META.yml. Version 1.2 January 2, 2015 Fixed issues in tests. Added 'sep' option to commafie.