present in a list

[andre_lag]

Hi,

I have a list like ("a.dwg" "b.dwg" "c.dwg")

and an filename "b.dwg"

I want to know if the filename is a part of the list.

which function must be used for this?

---

André

[_Tharwat]

---

@andre_lag wrote:

which function must be used for this?

---

Use member function .

[devitg]

(setq dwg-list (list "a.dwg" "b.dwg" "c.dwg"))

(setq dwg-to-search "b.dwg")

(if (member dwg-to-search dwg-list)
(alert (strcat  "\n" dwg-to-search "  exists"   ))
(alert (strcat "\n"  dwg-to-search "  do not exists"))
)        

[_Tharwat]

Another with function vl-position .

(setq lst (list "a.dwg" "b.dwg" "c.dwg"))
(if (vl-position "b.dwg" lst)
  (alert "File name is found")
  (alert "File name not found")
)

 Tharwat

[_Tharwat]

Another with foreach function

(foreach x (list "a.dwg" "b.dwg" "c.dwg")
  (if (eq "b.dwg" x)
    (setq found t)
  )
)
(if found (alert "File name is found"))

[andre_lag]

Thanks guys,

all suggestions works in my routine

---

André