Some wiser monk might correct me, but I think this difference is because "simple" blocks can be internally optimized

(edited: typoes corrected after reading the replies)

my @sorted = sort               @unsorted;
my @sorted = sort { $a <=> $b } @unsorted;
my @sorted = sort { $a cmp $b } @unsorted;

[download]

Are all internally optimized to something simple and efficient. Once the block gets more complicated, like having multiple statements and/or multiple expressions, every block has to be wrapped in scopes *for each call* to that sub. This is one of the reasons why the Larry-Rossler Guttman-Rosler Transform is so efficient.

my @sorted = sort { $a->{id} <=> $b->{id} || $a->{foo} cmp $b->{foo} }
+ @unsorted; # SLOW
my @sorted = map { $_->[1] } sort { $a->[0] cmp $b->[0] } map { pack "
+l>A*", $_->{id}, $_->{foo} } @unsorted; # FAST

[download]

Enjoy, Have FUN! H.Merijn

In reply to Re^2: Rosetta Code: Long List is Long (Updated Solutions) by Tux
in thread Rosetta Code: Long List is Long by eyepopslikeamosquito

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