Assigned tests for a nil (unassigned) pointer or procedural variable.



Unit



System



Category



miscellaneous routines



function Assigned(var P): Boolean;



Description



P must be a variable reference of a pointer or procedural type. Assigned(P) corresponds to the test P<> nil for a pointer variable, and @P <> nil for a procedural variable.

Assigned returns False if P is nil, True otherwise.



Note



Assigned can't detect a dangling pointer--that is, one that isn't nil but no longer points to valid data. For example, in the code example for Assigned, Assigned won't detect the fact that P isn't valid.



자세한 뜻은 모르겠으나... Assigned 는 일반포인터 및 프로시져형 포인터의 값도 할당되었는지 확인할수 있다는 얘기 같은데요.. 아닌가? -.-;;



한승협 께서 말씀하시기를...

> 안냐세여~

>

> 말 그대로 assigned()함수랑 nil인가 비교하는 거랑 뭐가 다른가요?

> 그냥 잘 모르고 넘어갈려니까 늘 찜찜해서요..

> 그럼.. ^^*

>