Here's a non-aliasing version that does work, but it doesn't perform very well. Why it works is left as an exercise. 

sub bukNoAlias (@) {
    my @a = @_;
    my( $n, $t );
    my $i = @_;
    map+( $t=$a[ $n=rand($i--) ], $a[ $n ]=$a[ $i ] )[ 0 ], @_;
}

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In reply to Re^3: About List::Util's pure Perl shuffle() by BrowserUk
in thread About List::Util's pure Perl shuffle() by blazar

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