Lisp

[Anonymous]

Dear all 

If

(setq a (the auto cad forum))

(setq b (lisp))

so now i need to interchange the value of b  to a....

If anyone knows this function please help me..

Regards 

DMC

[Kent1Cooper]

Whatever you have in two variables, you can swap their contents this way:

(setq

  temp a

  a b

  b temp

)

[martti.halminen]

---

@di****hmc wrote:

Dear all 

If

(setq a (the auto cad forum))

(setq b (lisp))

so now i need to interchange the value of b  to a....

If anyone knows this function please help me..

Regards 

DMC

---

Actually trying your example in the  VLIDE console window produces this:

_$ (setq a (the auto cad forum))
; error: no function definition: THE
_1$ a
nil
_1$ (setq b (lisp))
_$ b
nil
_$ (setq b (lisp))
; error: no function definition: LISP
_1$

So, start taking those quote marks seriously, they are not optional!

(the previous answer already handled the question)

-- 

[john.uhden]

I apologize for Marrti's somewhat cynical reply.  Cynicism is usually my brand.  What Kent responded is the best answer you can get.  I use his approach very often.

[_gile]

Hi,

Just for fun:

(mapcar 'set '(a b) (list b a))

[john.uhden]

@_gile WROTE:

Just for fun:

(mapcar 'set '(a b) (list b a))

THAT IS FUN!  THANKS!