Listing 1:, the Perl Module that Serves as Our SOAP Endpoint

package Text::Caps;

use strict;
use diagnostics;
# Turn off in production code capitalize expects to
# receive one argument. It returns that argument,
# capitalized, using Perl's built-in
# capitalization (uc) function.

sub capitalize
    my $self = shift;
    my $word = shift;

    return uc ($word);

# capitalize_array expects to receive a
# list of arguments. The
# subroutine returns a list corresponding to
# the input list, except
# that each element has been capitalized.

sub capitalize_array
    my $self = shift;
    my @words = @_;

    return [map {uc $_} @words];