Topic: show contents of a list

[motee-z]

hello all
how to show the contents of a list consist of real number, through alert
example
(setq lstv(list 2 5 8 10 18 19 20 25 30 31 41 42 ......... n))
how to prompt on screen by alert
(alert )
thanks for any help

[BIGAL]

Fairly straight forward if all numbers

Code: [Select]

(setq lstv (list 2 5 8 10 18 19 20 25 30 31 41 42) str "")
(foreach val lstv
(setq str (strcat str " " (rtos val 2)))
)
(alert (strcat "List is " str))

[dexus]

This is a really weird way of doing it I guess, but it seems to work 
Princ works with any variable and alert only works with a string.
The last line of the commandline is saved in the lastprompt sysvar and returned as a string.
So you end up with this:

Code - Auto/Visual Lisp: [Select]

1. (defun alert-all (lstv)
2.   (princ "\n")
3.   (princ lstv)
4.   (princ "\n")
5.   (alert (getvar 'lastprompt))
6.   (princ)
7. )

[dexus]

Or using this build in function:

Code - Auto/Visual Lisp: [Select]

1. (alert (vl-princ-to-string lstv))

*Offtopic*
Wonder why most conversion functions have a -> arrow in the name, but this one has -to-.
Might be more consistent if it was vl-princ->string instead.

[It's Alive!]

Or using this build in function:

Code - Auto/Visual Lisp: [Select]

1. (alert (vl-princ-to-string lstv))

*Offtopic*
Wonder why most conversion functions have a -> arrow in the name, but this one has -to-.
Might be more consistent if it was vl-princ->string instead.

a conspiracy by a sinister and powerful group of anti pointer people

[motee-z]

thank you

[Pepe]

Other way...

Code - Auto/Visual Lisp: [Select]

1. (alert (apply 'strcat (mapcar '(lambda (x) (strcat " " (itoa x))) lstv)))