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ODA IFC SDK
API Reference > OdDAI Namespace > Classes > OdSDAIInstance Class > OdSDAIInstance Methods > testAttr Method > OdSDAIInstance::testAttr Method (const AttributePtr&)
OdSDAIInstance::testAttr Method (const AttributePtr&)
Syntax
C++
virtual bool testAttr(const AttributePtr& attribute) const;

Retrieves whether the attribute value is set or is unset.

Parameters
Description
attribute
[in] A smart pointer to an instance of the Attribute class that represents the attribute type.

true if the attribute has a value; otherwise, the method returns false (it means that the attribute value is not set).

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