Hi all.
I must confess to being a little ashamed. Having worked with perl for a reasonable length of time, the concept of a closure should not prove to be so enigmatic. To alleviate my ignorance, I was hoping some of you could evaluate the code below and tell me what is happening at each stage of program execution. Granted, this is a very simple closure but in the event that someone asks me to explain how/why it works, I would probably provide an inadequate answer (at best).
#!/usr/bin/perl -w
use strict;
sub shoppingList {
my $item = shift();
return sub
{
my $otherItem = shift();
print "I need to buy a $item and a $otherItem.\n";
};
}
my $itemInBasket = shoppingList( "sweater" );
my $newItemInBasket = shoppingList( "lipstick" );
&$itemInBasket( "pair of shoes" );
&$newItemInBasket( "purse" );
Thanks in advance for any help you are able to provide.
-Katie.
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