BloombergLP::bdlb::NullableAllocatedValue::emplace

Destroy any contained value and construct a new one in place.

Synopsis

Declared in <bdlb_nullableallocatedvalue.h>

template<
    class INIT_LIST_TYPE,
    class... ARGS>
TYPE&
emplace(
    std::initializer_list<INIT_LIST_TYPE> il,
    ARGS&&... args);

Description

Assign to this object the value of the (template parameter) TYPE created in place using the specified il and specified args and return a reference providing modifiable access to the underlying TYPE object. If this object already contains an object (`true == hasValue()`), that object is destroyed before the new object is created. Note that if the constructor of TYPE throws an exception this object is left in a disengaged state.

Return Value

modifiable reference to the created value

Parameters

Name

Description

initializer list forwarded to construct the contained value

args

arguments forwarded to construct the contained value

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