---
-
  - 1
  - sub { print "one" }

##</code><code>##

use YAML;

my $s = YAML::LoadFile( "t.yml" );
my $f = $s->[ 0 ]->[ 1 ];
$f->();

##</code><code>##

perl t.pl
Undefined subroutine &main::sub { print "one" } called at t.pl line 10.