at() [1/2]

reference at

(

std::size_t

off

)

Provides the caller with a functional access to a column element by its index which is validated.

Parameters

off	An offset of the position of the desired element with respect to the beginning of the column.

Returns

A reference to an element at the position off within the column.

Exceptions

Chusov::Exceptions::OutOfRangeException

The value of off does not appertain to the integral set [0, size() - 1] of valid element indices.