Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Flat Map (adoc)

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284 :1245

	English Inserts an element constructed from `k` and `args` into the table if there is no existing element with key `k` contained within it. 131/10000 · 131
285 :1248

	English Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`. Notes:;; This function is similiar to xref:#concurrent_flat_map_emplace[emplace], 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++ 336/10000 · 336
:1256 :1256

	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
:1261 :1261

	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
288 :1266

	English unlike xref:#concurrent_flat_map_emplace[emplace], which simply forwards all arguments to ``value_type``'s constructor. 119/10000 · 119
:1268 :1268

	English Invalidates pointers and references to elements if a rehashing is issued. 73/10000 · 73
290 :1270

	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. 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. 373/10000 · 373
:1272 :1272

	English -- 2/10000 · 2
:1274 :1274

	English --- 3/10000 · 3
293 :1276

	English try_emplace_or_[c]visit 23/10000 · 23
294 :1277

	English ```c++ template<class... Args, class F> bool try_emplace_or_visit(const key_type& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_cvisit(const key_type& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_visit(key_type&& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_cvisit(key_type&& k, Args&&... args, F&& f); template<class K, class... Args, class F> bool try_emplace_or_visit(K&& k, Args&&... args, F&& f); template<class K, class... Args, class F> bool try_emplace_or_cvisit(K&& k, Args&&... args, F&& f); ``` 609/10000 · 609
295 :1292

	English Inserts an element constructed from `k` and `args` into the table if there is no existing element with key `k` contained within it. Otherwise, invokes `f` with a reference to the equivalent element; such reference is const iff a `*_cvisit` overload is used. 257/10000 · 257
:1296 :1296

	English Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`. Notes:;; No `value_type` is constructed if there is an element with an equivalent key; otherwise, the construction is of the form: + + -- ```c++ 238/10000 · 238
:1304 :1304

	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
:1309 :1309

	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
:1314 :1314

	English Invalidates pointers and references to elements if a rehashing is issued. 73/10000 · 73
300 :1316

	English The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack. 115/10000 · 115
301 :1318

	English The `template<class K, class\... Args, class F>` overloads only participate 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. 382/10000 · 382
:1320 :1320

	English -- 2/10000 · 2
:1322 :1322

	English --- 3/10000 · 3

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