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Shell Programming and Scripting
Csv file parsing and validating
Post 302898249 by shree11 on Monday 21st of April 2014 01:33:48 AM
04-21-2014
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LEARN ABOUT DEBIAN
scalar::util::numeric
Scalar::Util::Numeric(3pm) User Contributed Perl Documentation Scalar::Util::Numeric(3pm) NAME
Scalar::Util::Numeric - numeric tests for Perl scalars SYNOPSIS
use Scalar::Util::Numeric qw(isnum isint isfloat); foo($bar / 2) if (isnum $bar); if (isint $baz) { # ... } elsif (isfloat $baz) { # ... } DESCRIPTION
This module exports a number of wrappers around perl's builtin "grok_number" function, which returns the numeric type of its argument, or 0 if it isn't numeric. TAGS
All of the functions exported by Scalar::Util::Numeric can be imported by using the ":all" tag: use Scalar::Util::Numeric qw(:all); EXPORTS
isnum isnum ($val) Returns a nonzero value (indicating the numeric type) if $val is a number. The numeric type is a conjunction of the following flags: 0x01 IS_NUMBER_IN_UV (number within UV range - not necessarily an integer) 0x02 IS_NUMBER_GREATER_THAN_UV_MAX (number is greater than UV_MAX) 0x04 IS_NUMBER_NOT_INT (saw . or E notation) 0x08 IS_NUMBER_NEG (leading minus sign) 0x10 IS_NUMBER_INFINITY (Infinity) 0x20 IS_NUMBER_NAN (NaN - not a number) isint isuv isbig isfloat isneg isinf isnan The following flavours of "isnum" (corresponding to the flags above) are also available: isint isuv isbig isfloat isneg isinf isnan "isint" returns -1 if its operand is a negative integer, 1 if it's 0 or a positive integer, and 0 otherwise. The others always return 1 or 0. SEE ALSO
o "type" in autobox o Data::Types o Params::Classify o Params::Util o Scalar::Util o String::Numeric VERSION
0.22 AUTHORS
o chocolateboy <chocolate@cpan.org> o Michael G Schwern <schwern@pobox.com> COPYRIGHT
Copyright (c) 2005-2010, chocolateboy. This module is free software. It may be used, redistributed and/or modified under the same terms as Perl itself. perl v5.14.2 2010-08-25 Scalar::Util::Numeric(3pm)