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Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the container's hash function or comparison function.

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		```c++ size_type max_load() const noexcept; ```
		Returns:;; The maximum number of elements the container can hold without rehashing, assuming that no further elements will be erased. Note:;; After construction, rehash or clearance, the container's maximum load is at least `max_load_factor() * bucket_count()`. This number may decrease on erasure under high-load conditions.
	:1118	---
		rehash
		```c++ void rehash(size_type n); ```
		Changes if necessary the size of the bucket array so that there are at least `n` buckets, and so that the load factor is less than or equal to the maximum load factor. When applicable, this will either grow or shrink the `bucket_count()` associated with the container.
		When `size() == 0`, `rehash(0)` will deallocate the underlying buckets array. If the provided Allocator uses fancy pointers, a default allocation is subsequently performed.
	:1129	Invalidates iterators, pointers and references, and changes the order of elements.
	:1132	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the container's hash function or comparison function.
	:1134	---
		reserve
		```c++ void reserve(size_type n); ```
		Equivalent to `a.rehash(ceil(n / a.max_load_factor()))`.
		Similar to `rehash`, this function can be used to grow or shrink the number of buckets in the container.
	:1145	Invalidates iterators, pointers and references, and changes the order of elements.
	:1148	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the container's hash function or comparison function.
	:1150	---
		Statistics
		get_stats
		```c++ stats get_stats() const; ```
		Returns:;; A statistical description of the insertion and lookup operations performed by the container so far. Notes:;; Only available if xref:reference/stats.adoc#stats[statistics calculation] is xref:unordered_flat_set_boost_unordered_enable_stats[enabled].
	:1163	---
		reset_stats
		```c++ void reset_stats() noexcept; ```
		Effects:;; Sets to zero the internal statistics kept by the container. Notes:;; Only available if xref:reference/stats.adoc#stats[statistics calculation] is xref:unordered_flat_set_boost_unordered_enable_stats[enabled].
	:1174	---
		Deduction Guides
		A deduction guide will not participate in overload resolution if any of the following are true:
		- It has an `InputIterator` template parameter and a type that does not qualify as an input iterator is deduced for that parameter. - It has an `Allocator` template parameter and a type that does not qualify as an allocator is deduced for that parameter. - It has a `Hash` template parameter and an integral type or a type that qualifies as an allocator is deduced for that parameter. - It has a `Pred` template parameter and a type that qualifies as an allocator is deduced for that parameter.
		A `size_type` parameter type in a deduction guide refers to the `size_type` member type of the container type deduced by the deduction guide. Its default value coincides with the default value of the constructor selected.
		__iter-value-type__

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		Erase by Position
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	:1129	Invalidates iterators, pointers and references, and changes the order of elements.
	:1132	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the container's hash function or comparison function.
	:1134	---
	:1145	Invalidates iterators, pointers and references, and changes the order of elements.
	:1148	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the container's hash function or comparison function.
	:1150	---
	:1163	---
	:1174	---
	:1208	Notes:;; Behavior is undefined if the two containers don't have equivalent equality predicates.
	:1210	---
	:1222	Notes:;; Behavior is undefined if the two containers don't have equivalent equality predicates.
	:1234	If `Allocator::propagate_on_container_swap` is declared and `Allocator::propagate_on_container_swap::value` is `true` then the containers' allocators are swapped. Otherwise, swapping with unequal allocators results in undefined behavior.
	:1240	---
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English 140 characters editedCurrent translationState: Read-only

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06/05/2026

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:1148

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48626

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doc/modules/ROOT/pages/reference/unordered_flat_set.adoc, string 320

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