fig09_03.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 55 行

#!/usr/bin/perl
# Fig. 9.3: fig09_03.pl
# Demonstration of here documents

use warnings;
use strict;

my $notInterpolated = "Interpolated!";

print <<DONE;
For here documents the type of quotes determines
what kind of interpolation is done.  No quotes means
double quoted interpolation.  $notInterpolated

DONE

print <<'DONE';
Single quotes do not allow interpolation.
$notInterpolated.

DONE

my $variable = <<'DONE';
Here documents do not have to be used 
with the print function.

DONE

print $variable;

($variable = <<DONE) =~ s/^\s+//gm;
    All the leading spaces will be
       ignored so you can indent to 
          your heart's content.

DONE

print $variable;

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