[ic] perl syntax of shopping cart items

[interchange-users@interchange.redhat.com (Kevin Walsh)]

> > So, stripping down the above example, you can push all the SKU
> > values into one array using the following two lines of Perl code:
> > 
> >     my @out;
> >     push(@out,$_->{code}) for (@{$Carts->{main}});
> >
> A little bit more appropriate is:
> 
> @out = map {$_->{code}) @{$Carts->{main}};
> 
I didn't think of that. :-)

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