has_parent
Description:
Checks if this has a parent, and optionally, if it is parent.
If parent is null then this function returns true if
this has any parent at all. If parent is non-null then
true is only returned if this is an immediate child of parent.
Parameters:
| this |
input File |
| parent |
the parent to check for, or null |
Returns:
|
true if this is an immediate child of |