Return the specified from allocator adapted to a type most likely to be usable for initializing another AA object. Specifically, return from.mechanism() if from is a specialization of bsl::allocator (or a class derived from bsl::allocator); otherwise return from unchanged.

Synopsis

Declared in <bslma_allocatorutil.h>

template<class t_ALLOC>
static
t_ALLOC
adapt(t_ALLOC const& from)
requires ! IsDerivedFromBslAllocator<t_ALLOC>::value;

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