[Matlisp-devel] Re: WITH-SLOTS behavior

[Paul W. <pw...@sn...>]

|
| 1. I have noticed that WITH-SLOTS used in conjunction with Matlisp
and
| an object defined by DEFSTRUCT doesn't always find the requested
| slots.  For example...if I start in package :USER all is well.
|
|   (IN-PACKAGE :USER)
|
|   ;;; a bunch of code to DEFSTRUCT etc
|
|   (DEFUN DO-SOMETHING (PD)
|     (WITH-SLOTS (HEADING PITCH GPS-LATITUDE GPS-LONGITUDE) PD
| ...))
|

WITH-SLOTS on defstruct instances works best inside of DEFMETHOD
forms,
and accesses to the slots are well optimized by the compiler. I looked
at why there were the problems you see in DEFUN forms but did not
discover anything useful in the time I had available.

Paul