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Devel::LexAlias - alias lexical variables

Author

       Richard Clamp <richardc@unixbeard.net> with close reference to PadWalker by Robin Houston

Bugs

       lexalias delves into the internals of the interpreter to perform its actions and is so very sensitive  to
       bad data, which will likely result in flaming death, or a core dump.  Consider this a warning.

       There  is no checking that you are attaching a suitable variable back into the pad as implied by the name
       of the variable, so it is possible to do the following:

        lexalias( $sub, '$foo', [qw(an array)] );

       The behaviour of this is untested, I imagine badness is very close on the horizon though.

Description

       Devel::LexAlias provides the ability to alias a lexical variable in a subroutines scope to one of your
       choosing.

       If you don't know why you'd want to do this, I'd suggest that you skip this module.  If you think you
       have a use for it, I'd insist on it.

       Still here?

       lexalias( $where, $name, $variable )
           $where  refers  to  the subroutine in which to alias the lexical, it can be a coderef or a call level
           such that you'd give to "caller"

           $name is the name of the lexical within that subroutine

           $variable is a reference to the variable to install at that location

Name

       Devel::LexAlias - alias lexical variables

See Also

       peek_sub from PadWalker, Devel::Peek

Synopsis

        use Devel::LexAlias qw(lexalias);

        sub steal_my_x {
            my $foo = 1;
            lexalias(1, '$x', \$foo);
        }

        sub foo {
            my $x = 22;
            print $x; # prints 22

            steal_my_x;
            print $x; # prints 1
        }

See Also