STL containers element destruction order

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Does ISO C++ standard mandate any sort of destruction order of objects inside STL containers?

  • Are std::list/std::vector/std::map elements destroyed starting from the beginning or the end of the container?
  • Can I rely on std::map storing its elements in std::pairs internally so a key in a pair is destroyed before its value (or vice versa)?
portability stl c++
2 Answers
  1. Unspecified in the standard.
  2. Yes, but this means that the key is destroyed after its associated value.
Admin1
  1. Unspecified
  2. Yes, you can depend on std::map storing it's elements in std::pairs, but I don't see anything which specifies the Key portion of a std::pair being destructed before a Value portion.
user_2381280
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