BloombergLP::bdlb::NullableValueRef::makeValueInplace

Assign to this nullable object the value of the (template parameter) TYPE created in place using the specified args. Return a reference providing modifiable access to the created (value) object. The object is also accessible via the value method. If this nullable object already contains an object (false == isNull()), that object is destroyed before the new object is created. If TYPE has the trait bslma::UsesBslmaAllocator (TYPE is allocator‐enabled) the allocator specified at the construction of this nullable object is used to supply memory to the value object. Attempts to explicitly specify via args another allocator to supply memory to the created (value) object are disallowed by the compiler. Note that if the constructor of TYPE throws an exception this object is left in the null state.