API Reference > OdIfc4x1 Namespace > Classes > IfcCurveOnSurface Class > IfcCurveOnSurface Methods > _d Method
_d Method
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This is the overview for the _d method overload.

Overload List
 
Name 
Description 
 
IfcCurveOnSurface::_d () 
Retrieves the "Select" data type determinant.  
 
IfcCurveOnSurface::_d (eIfcCurveOnSurface) 
This is _d, a member of class IfcCurveOnSurface. 
Group
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