http://www.perlmonks.org?node_id=988630


in reply to Re^5: undef/defined &{$name} while "strict refs"
in thread undef/defined &{$name} while "strict refs"

When we execute my code above, the script throws an exception because &{ 'run' } violates "strict refs". Khen1950fx explained how to avoid this problem (I appreciate his suggestion).

On the other hand, when we comment out &{ 'run' }, my script doesn't output error messages. This result shows the following doesn't violate "strict refs": 
my $walkable = defined &{ 'walk' };
undef &{ 'walk' };

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It seems each line uses symbolic references. I don't understand why this is possible.

In Section Seekers of Perl Wisdom