Well no... it would not avoid the call, but fake the current call as that one.

The magic goto really introduces a bit more (or another) overhead, in that it looks back and forth, saves @_, carefully disassembles the current stack frame and replaces it with the one of the called sub, and then restores @_. The magic goto is most useful to replace the current subroutine, mainly to eliminate AUTOLOAD from what caller() might report. So in replacing &z with goto &z we are trading localizing @_ against disassembly of a whole sub frame. I don't know what's "cheaper".

&z is really a shorthand of z(@_) which additionally overrides the argument prototypes of sub z (if any).

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re^3: map vs for (not the usual breed) by shmem
in thread map vs for (not the usual breed) by blazar

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