Документ взят из кэша поисковой машины. Адрес оригинального документа : http://hea-www.harvard.edu/~dburke/perl-slang/region_example Дата изменения: Sun Jan 9 22:29:20 2005 Дата индексирования: Tue Oct 2 02:33:36 2012 Кодировка: Поисковые слова: rigel

# Since no code is specified on the 'use Inline' line we look for
# the __SLang__ block at the end of the file
#
use strict;
use Inline 'SLang';

# regParse() in S-Lang returns a S-Lang variable with a type of Reg_Type.
# This value is automatically converted into a Perl object of class Reg_Type.
#
my $reg = regParse("circle(100,200,50)");
print "S-Lang's regParse() returned [$reg]\n";
print "which is a " . ref($reg) . " object\n";
print "and whose area is " . regArea($reg) . "\n";
print " (pi * 50^2 is " . 4.0*atan2(1.0,1.0)*50*50 . ")\n";
does_slang_agree($reg);

__END__
__SLang__

% Anything after the __SLang__ marker is S-Lang code

% load in the region routines
require("region");

% and define a somewhat pointless routine
define does_slang_agree(in) {
if ( typeof(in) != Region_Type ) verror( "Error!" );
vmessage( "S-Lang was sent a Region_Type variable with an area of %.11f",
regArea(in) );
}