Why can't I have a std::set or std::unordered_set of std::functions?Is there any way to get it to work anyway?
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unordered_map pointer to element's value valid after resize?
If I have an unordered_map<key, someNiceObject>(note someNiceObject is not a pointer)I have an API which inserts a new element, then returns a pointer to someNiceObject now in the map.
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Range-based for loop on unordered_map and references
When running a range-based for loop on an std::unordered_map it appears that the type of the loop variable does not use reference types:
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std::unordered_map::extract references/pointers invalidation
For the new C++17 std::unordered_map::extract function the documentation says:Extracting a node invalidates only the iterators to the extracted element, and preserves the relative order of the elements that are not erased. Pointers and references to the extracted element remain valid, but cannot be used while element is owned by a...
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Does std::unordered_map equality depend on insertion order
If you create two std::unordered_map containers using the same set of (non equal) key-value pairs, but inserted in a different order (so the containers hold equal elements, but potentially in different orders), are the containers guaranteed to be equal, according to the equality operator (operator==). I'm assuming that the hash-code...
