fig13_10.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 37 行

#!/usr/bin/perl
# Figure 13.10: fig13_10.pl
# Demonstrates the return values of the ref function

use strict;

my @array = qw( hello world );
my %hash = ( key => "data" );

print( 'ref(10) = ', ref( 10 ), "\n" );   # undefined
print( 'ref(\10) = ', ref( \10 ), "\n" );
print( 'ref(\@array) = ', ref( \@array ), "\n" );
print( 'ref(\%hash) = ', ref( \%hash ), "\n" );
print( 'ref(\&function) = ', ref( \&function ), "\n" );
print( 'ref(\\\@array) = ', ref( \\@array ), "\n" );
print( 'ref(\*hash) = ', ref( \*hash ), "\n" );

sub function 
{
   print( "Hello world.\n" );
}


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