I noticed that, in the allocator-aware containers interface, the standard requires that the clear() member function be noexcept while the destructor not. Furthermore, it appears a discrepancy in the case of some node-based containers, such as std::forward_list and std::set, since the clear() member function performs the same operation as the destructor. Is there any reason for this difference?
Why is the clear() function noexcept while the destructor not?
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Destructors are implicitly
noexceptunless any of the member variable destructors or base class destructors have been marked withnoexcept(false)or the destructor itself is explicitly marked withnoexcept(false).