Filter::cpp Filter::cpp is a cpp source filter.
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Perl module source cpp source cpp filter cpp

Filter::cpp Description

Filter::cpp is a cpp source filter. Filter::cpp is a cpp source filter.SYNOPSIS use Filter::cpp ;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 = $an" ; #ifdef FRED print "Hello FREDn" ; #else print "Where is FREDn" ; #endifAnd here is what it will output: a = 3 Hello FREDThis example below, provided by Michael G Schwern, shows a clever way to get Perl to use a C pre-processor macro when the Filter::cpp module is available, or to use a Perl sub when it is not. # use Filter::cpp if we can. BEGIN { eval 'use Filter::cpp' } sub PRINT { my($string) = shift; #define PRINT($string) (print $string."n") } PRINT("Mu");Look at Michael's Tie::VecArray module for a practical use.Requirements:· Perl Requirements: · Perl

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