Retrieving the Entire Pattern: $& : Special Variables « Language Basics « Perl

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Perl » Language Basics » Special Variables

Retrieving the Entire Pattern: $&


   

#!/usr/local/bin/perl 



while ($line = <>) { 

    while ($line =~ /\d/g) { 

        $digitcount[$&]++; 

    } 

} 

print ("Totals for each digit:\n"); 

for ($i = 0; $i <= 9; $i++) { 

    print ("$i: $digitcount[$i]\n"); 

}

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38.	$(dollar), is the separator
39.	$MATCH = $&
40.	$SIG{__DIE__}
41.	$SIG{__WARN__} = 'IGNORE';
42.	$SIG{__WARN__} = sub {die "Warning: $_[0]"};
43.	$\ is 'END_OF_OUTPUT'
44.	$^ is the format header
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83.	The $_ Scalar Variable
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