hasValue overloads
Declared in <ball_attributecontainer.h>
Return true if the specified attribute is the same as the value held in this container, and false otherwise.
virtual
bool
hasValue(Attribute const& attribute) const override;
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Return true if a attribute having the specified value exists in this object, and false otherwise.
virtual
bool
hasValue(Attribute const& value) const = 0;
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