LLSD myValue = 42; bool isValueDefined = myValue.isDefined(); // isValueDefined = true
LLSD myValue; bool isValueDefined = myValue.isDefined(); // isValueDefined = false
LLSD myValue = LLSD::Array(); myValue.append(42); bool isValueDefined = myValue.isDefined(); // isValueDefined = trueFrom the examples, it is not clear which package library is being used as LLSD is a format rather than a library. However, LLSD is often used as part of the OpenMetaverse library, which is a C++ implementation of the Second Life protocol.