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Perl-Sensitive Sunglasses

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Although the text of the japh is plainly readable in the code, what exactly happens to the split up letters that are passed to _ and __ is... a secret!

sub r{srand$^T; @_}sub b{do{@b=map.5<rand,@_}until grep($_,@b)&&grep( !$_,@b);@b}sub _{print(@_),return if@_<2;my(@L,@R);push@{$_?\@L:\@R}, shift for&b;_(@L);_(@R)};sub __{1<@_ or return@_;my@b=&b;my$c=grep$_, @b;my@L=__(@_[0..$c-1]);my@R=__(@_[$c..$#_]);map shift@{$_?\@L:\@R}, @b}_ r __ r split//,"Just Another Perl Hacker,\n";

If you aren't confused yet, run the code in a debugger, and note the list that __ returns, then try to figure out how _ magically prints the letters in the correct order.

Also... I'm fairly sure that this code (unlike my previous randomized JAPH) should be run ok on any perl, even though I've only tested it on 5.12.1

In reply to Better random magic by BenGoldberg

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