The syntax of sort can't be replicated by subs. 

>perl -E"say defined(prototype('CORE::sort')) ? 'can replicate' : 'can
+\'t replicate'"
can't replicate

[download]

The best you can do is &@. 

sub mysort(&@) {
   my $code_ref = shift;
   ...
}

mysort { ... } ...      # Same as: mysort(sub { ... }, ...)

[download]

In reply to Re: Prototype like sort()? by ikegami
in thread Prototype like sort()? by perlancar

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