Never local $_ in a subroutine. If you want to use the magic assignment you should do local *_. Of course you have to unpack anything you want from @_ first.
If you get into the habit of doing local $_ inside you subroutines it will seem to work fine - maybe for years. Then one day someone will call one of your subroutines inside a for() loop that is iterating over the values of a tied array or hash. Very odd things will start happening in their program.
In reply to Re^2: Closure producing 'Modification of read-only value' error
by nobull
in thread Closure producing 'Modification of read-only value' error
by wfsp
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