This workaround for parsing cubes was neccessary at development time because there was a (presumable) bug in RcppArmadillo that sometimes caused the parsing of arma::cx_cube objects to fail, such that the function received an un-initialized object instead of the parsed one.
cx_cube_from_ComplexVector(x)The workaround parses an Rcpp vector instead, and manually copies the data in an arma::cx_cube object. Besides being redundant, it also makes the code less readable and it is hoped that this workaround can be removed in future revisions.