I can't imagine it ever causing problems. It's really the iteration of the loop after the modification where foreach can get confused.

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name
can get confused.

In reply to Re: foreach argument modification inside loop, followed by return from loop by tobyink
in thread foreach argument modification inside loop, followed by return from loop by vsespb

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