Earlier this evening I was given a technical Perl test for a potential new job. Most of the questions were pretty straightforward, but I thought you might be interested to see this one:

What does the following code print out

@a = ("a", 1, "b", 2, "c", 3);
$i = 0;
grep($foo{$_} = $a[$#a - $i++], @a);
print $foo{"c"}, "\n";

[download]

Secondly, what is an easier way to populate %foo?

I think I came up with pretty good answers for both parts, but I'd be interested to hear what you think.

--
<http://www.dave.org.uk>

"The first rule of Perl club is you don't talk about Perl club."

In reply to Tuesday Evening Code Quiz by davorg

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