Lines Remaining on the Page: $- : Special Variables « Language Basics « Perl






  1. Perl
  2. Language Basics
  3. Special Variables

Lines Remaining on the Page: $-

   
#!/usr/local/bin/perl 

open (OUTFILE, ">outfile"); 
select ("OUTFILE"); 
write; 
print STDOUT ("lines to go before write: $-\n"); 
write; 
print STDOUT ("lines to go after write: $-\n"); 
format OUTFILE = 
This is a test. 

. 
format OUTFILE_TOP = 
This is a test. 

.








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35.$! stores the error message
36.$" is the separator
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39.$MATCH = $&
40.$SIG{__DIE__}
41.$SIG{__WARN__} = 'IGNORE';
42.$SIG{__WARN__} = sub {die "Warning: $_[0]"};
43.$\ is 'END_OF_OUTPUT'
44.$^ is the format header
45.$^O stores the name of the operating system
46.$^S: is inside eval
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49.$_ for print function
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65.Perl's modules reside in the directories named in the @INC array, or subdirectories
66.Perl's special arrays
67.Perl's special variables
68.Postmatch $'
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71.Print the default variable's ($_) value
72.Quick Sum
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74.Read lines from supplied filenames
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77.Retrieving the Entire Pattern: $&
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