fig04_09.pl

PERL语言资料 可以用于PERL程序设计

#!/usr/bin/perl
# Fig. 4.9: fig04_09.pl
# Demonstrating array slices and list assignment.

@array = 
   qw( zero one two three four five six seven eight nine );
print "@array\n\n";

# display slices of @array
print "@array[ 1, 3, 5, 7, 9 ]\n";
print "@array[ 2 .. 6 ]\n\n";

# perform list assignments and display results
( $chiquita , $dole ) = ( "banana", "pineapple" );
print "\$chiquita = $chiquita\n\$dole = $dole\n";
@array[ 1, 3, 5, 7, 9 ] = qw( 1 3 5 7 9 );
print "@array\n\n";

# use list assignment to swap the values of two variables
( $chiquita , $dole ) = ( $dole , $chiquita );
print "After swapping values:\n";
print "\$chiquita = $chiquita\n\$dole = $dole\n\n";

# show that an array on the left of a list assignment
# receives all remaining initializers in the list on the 
# right side of a list assignment
( $first, @array2, $second ) = ( 1 .. 8 );
print "\$first = $first\n";
print "\@array2 = @array2\n";
print "\$second = $second\n";

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