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3.4.4 Array Interpolation

Array variables can also be evaluated through interpolation into a double-quoted string. This works very much like the interpolation of scalars into double-quoted strings (see section 2.3.1 Scalar Interpolation). When an array variable is encountered in a double-quoted string, Perl will join the array together, separating each element by spaces. Here is an example:

use strict; my @saying = qw/these are a few of my favorite/; my $statement = "@saying things.\n"; # $statement is "these are a few of my favorite things.\n" my $stuff = "@saying[0 .. 1] @saying[$#saying - 1, $#saying] things.\n" # $stuff is "these are my favorite things.\n"

Note the use of slices when assigning $stuff. As you can see, Perl can be very expressive when we begin to use the interaction of different, interesting features.

  Published under the terms of the GNU General Public License Design by Interspire