asDouble() [Variant class]

Returns a reference to the value contained in this variant as an double. This can be used to modify the value of the variant.

double& asDouble();

This method will convert the type of the variant to double if necessary, see toDouble for more information. If the conversion is not possible, the method will cause a compilation error.

See value, as, and to for when to use the asXXX() vs. other accessors.