Perl 5 version 22.4
documentation
__SUB__
- __SUB__
A special token that returns a reference to the current subroutine, or
undef outside of a subroutine.
The behaviour of __SUB__ within a regex code block (such as /(?{...})/
)
is subject to change.
This token is only available under use v5.16
or the "current_sub"
feature. See feature.