* @brief Look-up the cache for an entry whose key matches the params. * @param params The key identifying the entry we're looking for. * @pa

\returns a vector expression of the \a i -th column, * only the meaningful part is returned. * \warning the internal storage must be colum

Return if the camera type is a valid enum

\returns the stored value at index \a key * If the value does not exist, then the value \a defaultValue is returned without any insertion. */

Returns the length of the array.

capacity

Pull some functions from namespace std. This is necessary because we want to use the same name (e.g. 'sqrt') for double-valued and Jet-valued functio

\returns an \link Eigen::ArrayBase Array \endlink expression of this matrix * \sa ArrayBase::matrix() */

Clear any existing decomposition * \sa rankUpdate(w,sigma) */

-- Resize overhead