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:955 :955

	English Inserts a new element into the container if there is no existing element with key `k` contained within it. 106/10000 · 106
:957 :957

	English If there is an existing element with key `k` this function does nothing. 72/10000 · 72
227 :959

	English `hint` is a suggestion to where the element should be inserted. This implementation ignores it. 96/10000 · 96
228 :962

	English Returns:;; If an insert took place, then the iterator points to the newly inserted element. Otherwise, it points to the element with equivalent key. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; This function is similiar to xref:#unordered_flat_map_emplace_hint[emplace_hint], with the difference that no `value_type` is constructed if there is an element with an equivalent key; otherwise, the construction is of the form: + + -- ```c++ 510/10000 · 510
:970 :970

	English value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<Args>(args)...)) 133/10000 · 133
:975 :975

	English value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<K>(k)), std::forward_as_tuple(std::forward<Args>(args)...)) ``` 135/10000 · 135
231 :980

	English unlike xref:#unordered_flat_map_emplace_hint[emplace_hint], which simply forwards all arguments to ``value_type``'s constructor. 128/10000 · 128
:982 :982

	English Can invalidate iterators pointers and references, but only if the insert causes the load to be greater than the maximum load. 125/10000 · 125
:984 :984

	English The `template<class K, class\... Args>` overload only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs and neither `iterator` nor `const_iterator` are implicitly convertible from `K`. The library assumes that `Hash` is callable with both `K` and `Key` and that `Pred` is transparent. This enables heterogeneous lookup which avoids the cost of instantiating an instance of the `Key` type. 453/10000 · 453
:986 :986

	English -- 2/10000 · 2
:988 :988

	English --- 3/10000 · 3
236 :990

	English insert_or_assign 16/10000 · 16
237 :991

	English ```c++ template<class M> std::pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj); template<class M> std::pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj); template<class K, class M> std::pair<iterator, bool> insert_or_assign(K&& k, M&& obj); ``` 272/10000 · 272
:1000 :1000

	English Inserts a new element into the container or updates an existing one by assigning to the contained value. 104/10000 · 104
:1002 :1002

	English If there is an element with key `k`, then it is updated by assigning `std::forward<M>(obj)`. 92/10000 · 92
:1004 :1004

	English If there is no such element, it is added to the container as: ```c++ 68/10000 · 68
:1007 :1007

	English value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<M>(obj))) 126/10000 · 126
:1012 :1012

	English value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<K>(k)), std::forward_as_tuple(std::forward<M>(obj))) ``` 128/10000 · 128
243 :1018

	English Returns:;; The `bool` component of the return type is `true` if an insert took place. + + If an insert took place, then the iterator points to the newly inserted element. Otherwise, it points to the element with equivalent key. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators pointers and references, but only if the insert causes the load to be greater than the maximum load. + + The `template<class K, class M>` only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. The library assumes that `Hash` is callable with both `K` and `Key` and that `Pred` is transparent. This enables heterogeneous lookup which avoids the cost of instantiating an instance of the `Key` type. 835/10000 · 835
:1026 :1026

	English --- 3/10000 · 3

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