If the specified original contains a value, create an Optional_Base object whose contained value is initialized from *original, converted to t_TYPE. Otherwise, create a disengaged Optional_Base. Use the specified allocator to supply memory.

Synopsis

Declared in <bslstl_optional.h>

template<class t_ANY_TYPE>
Optional_Base(
    std::allocator_arg_t,
    allocator_type allocator,
    BloombergLP::bslstl::Optional_CopyConstructFromOtherOptional,
    Optional_Base<t_ANY_TYPE> const& original);

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