Reference for package '#rtl'

TCustomVariantType.IsClear

Is the custom value unassigned ?

Declaration

Source position: variants.pp line 199

public 
  function IsClear(const V: tvardata) : Boolean;  Virtual;

Description

IsClear must be overridden to decide whether the custom variant V is equivalent to varClear (unassigned) value. The VarIsClear function calls this method to decide whether a custom variant is unassigned.

The TCustomVariantType implementation of IsClear always returns False.

See also

Name Description
VarIsClear Check if a variant is clear