Return a copy of the underlying object of a (template parameter) t_TYPE if this object is non‐null, and the specified value converted to t_TYPE otherwise. Note that this method returns by value, so may be inefficient in some contexts.

Synopsis

Declared in <bslstl_optional.h>

template<class t_ANY_TYPE>
t_TYPE
value_or(t_ANY_TYPE&& value) const &;

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