perl - 为什么这个 Perl 函数会返回一个值？

Question

   $hi = do_this('asdf');

   sub do_this
   {
       $blob{'f'} = {
          'k' => 'j'
      };
   }

   print $hi->{'k'};
   # prints j

由于 do_this 不返回任何内容，它如何仍然打印 j？

Answer 1

http://perldoc.perl.org/functions/return.html

In the absence of an explicit return, a subroutine, eval, or do FILE automatically returns the value of the last expression evaluated