vle-ename-valid

Arguments

'ename'   entity name to be verified

Return

T  if 'ename' is a valid entity name and not erased
NIL  if 'ename' is either not a valid entity name or erased

Example

(vle-ename-valid en) => return T or NIL

Alias

Remarks

this is a high-performance replacement for usual code like :
(if (entget en) ...)
(not (entget en))
(while (entget en) ...)
and similar "boolean" usage of (entget) return list