I was wondering if other people here found it as interesting as my co-workers and I do, to answer "What will this print?" questions...Ya'know those small snippets of code that, when run, output something interesting and unexpected...Generally the output is a big hint as to how it works, so running the snippet before guessing is half-cheating :)

Maybe some of you would be willing to share some of your favorites, or maybe this has come up more than I thought at the Monastery and you could point me to some nice nodes?

Here's a few recent ones that we've enjoyed. The first of which is similar to something I saw on Perlmonks in the past (I don't recall the node).

WWTP #1 

package one;

sub two { print "In one::two\n"; }

package main;

$one = "main";

sub main { return "one: " };
sub two { print "In main::two\n"; }

$one->two();
"one"->two();

[download]

WWTP #2 

$one = "two";
$two = "three";
$three = "four";
$four = "five";
$five = "six";

print $$$one . "\n";
print $$${"one"} . "\n";

[download]

WWTP #3 

$one = "two";

%$one:: = %::;
print %$one . "\n";

%$one = %::;
print %$one . "\n";

[download]


Staunch

In reply to What will this print? by staunch

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