Why autovivification works at 'for'?

Question

I have next code:

print   for @{ $events->{ $name } };

When $events is empty hash I got $name key which value is empty array []

Why autovivification works despite on that I just access element and assign nothing to it?

https://stackoverflow.com/questions/2206836/why-does-perl-autovivify-in-this-case — mpapec, Jun 23 '17 at 20:29

ikegami · Accepted Answer · 2017-06-23T20:36:27.543

0

Assigning doesn't autovivify; evaluating as an lvalue so that you can assign does.

Foreach's list expression is evaluated as an lvalue to allow $_ = 1 for @a;

edited Jun 23 '17 at 20:36

answered Jun 23 '17 at 20:30

ikegami

1 Answers1