std::vector::at - cppreference.com

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# std::vector::at

From cppreference.com
< cpp‎ | container‎ | vector

[edit template]

reference at( size_type pos ); |  |
const_reference at( size_type pos ) const; |  |

Returns a reference to the element at specified location `pos`, with bounds checking.

If `pos` not within the range of the container, an exception of type std::out_of_range is thrown.

### [edit] Parameters

pos | - | position of the element to return

### [edit] Return value

Reference to the requested element.

### [edit] Exceptions

std::out_of_range if !(pos < size()).

### [edit] Complexity

Constant.

### [edit] See also

operator[] | access specified element (public member function) [edit]

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