Json.num

constexpr Num& num() & ;
constexpr Num&& num() && ;
constexpr const Num& num() const & ;
constexpr const Num&& num() const && ;

Returns a reference to the internal numeric value.

Return Value
Returns a reference with matching const-qualification and value category (lvalue/rvalue) to the stored number

Exceptions
Throws std::bad_variant_access if the contained value is not numeric

Complexity
Constant time O(1)

Version

Since v3.0.0 .