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Filter::cpp(3pm)					User Contributed Perl Documentation					  Filter::cpp(3pm)

NAME
Filter::cpp - cpp source filter SYNOPSIS
use Filter::cpp ; DESCRIPTION
This source filter pipes the current source file through the C pre-processor (cpp) if it is available. As with all source filters its scope is limited to the current source file only. Every file you want to be processed by the filter must have a use Filter::cpp ; near the top. Here is an example script which uses the filter: use Filter::cpp ; #define FRED 1 $a = 2 + FRED ; print "a = $a " ; #ifdef FRED print "Hello FRED " ; #else print "Where is FRED " ; #endif And here is what it will output: a = 3 Hello FRED This example below, provided by Michael G Schwern, shows a clever way to get Perl to use a C pre-processor macro when the Filter::cpp module is available, or to use a Perl sub when it is not. # use Filter::cpp if we can. BEGIN { eval 'use Filter::cpp' } sub PRINT { my($string) = shift; #define PRINT($string) (print $string." ") } PRINT("Mu"); Look at Michael's Tie::VecArray module for a practical use. AUTHOR
Paul Marquess DATE
11th December 1995. perl v5.14.2 2012-06-22 Filter::cpp(3pm)

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HTML::FormFu::Filter(3pm)				User Contributed Perl Documentation				 HTML::FormFu::Filter(3pm)

NAME
HTML::FormFu::Filter - Filter Base Class SYNOPSIS
--- elements: - type: Text name: foo filters: - type: Encode candidates: - utf8 - Hebrew - type: Text name: bar filters: - LowerCase - Encode filters: - TrimEdges DESCRIPTION
"filters()" and "filter" can be called on any form, block element (includes fieldsets) or field element. If called on a field element, no "name" argument should be passed. If called on a form or block element, if no "name" argument is provided, a new filter is created for and added to every field on that form or block. See "FORM LOGIC AND VALIDATION" in HTML::FormFu for further details. METHODS
type Returns the "type" argument originally used to create the filter. localise_args Provide arguments that should be passed to localize to replace "[_1]", "[_2]", etc. in the localized string. parent Returns the HTML::FormFu::Element::_Field object that the filter is associated with. get_parent Arguments: \%options Traverses the parent hierarchy, returning the first parent that matches the supplied options. form Returns the HTML::FormFu object that the filter's field is attached to. name Shorthand for "$filter->parent->name" CORE FILTERS
HTML::FormFu::Filter::Callback HTML::FormFu::Filter::CompoundJoin HTML::FormFu::Filter::CompoundSprintf HTML::FormFu::Filter::CopyValue HTML::FormFu::Filter::Default HTML::FormFu::Filter::Encode HTML::FormFu::Filter::FormatNumber HTML::FormFu::Filter::HTMLEscape HTML::FormFu::Filter::HTMLScrubber HTML::FormFu::Filter::LowerCase HTML::FormFu::Filter::NonNumeric HTML::FormFu::Filter::Regex HTML::FormFu::Filter::Split HTML::FormFu::Filter::TrimEdges HTML::FormFu::Filter::UpperCase HTML::FormFu::Filter::Whitespace FILTER BASE CLASSES
The following are base classes for other filters, and generally needn't be used directly. HTML::FormFu::Filter::_Compound AUTHOR
Carl Franks, "cfranks@cpan.org" Based on the original source code of HTML::Widget::Filter, by Sebastian Riedel. LICENSE
This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-01-23 HTML::FormFu::Filter(3pm)
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