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# std::unordered_map::clear

From cppreference.com
< cpp‎ | container‎ | unordered map

[edit template]

void clear(); |  | (since C++11)

Removes all elements from the container.

Invalidates any references, pointers, or iterators referring to contained elements. May also invalidate past-the-end iterators.

### [edit] Parameters

(none)

### [edit] Return value

(none)

### [edit] Exceptions

`noexcept` specification:
noexcept

### [edit] Complexity

Linear in the size of the container.

### [edit] See also

erase | erases elements (public member function) [edit]

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