[mlpack-git] [mlpack] WIP: Refactor LRSDP to support more general linear constraints (#580)

[Ryan Curtin]

> + */
> +#ifndef __MLPACK_CORE_OPTIMIZERS_SDP_LINEAR_CONSTRAINT_IMPL_HPP
> +#define __MLPACK_CORE_OPTIMIZERS_SDP_LINEAR_CONSTRAINT_IMPL_HPP
> +
> +#include "linear_constraint.hpp"
> +
> +namespace mlpack {
> +namespace optimization {
> +
> +// MatrixConstraint implementation
> +
> +template <typename MatrixType>
> +arma::vec MatrixConstraint<MatrixType>::Evaluate(const arma::mat& x)
> +{
> +  const size_t m = _a.size();
> +  arma::vec vals = arma::vec(m);

You can just do `arma::vec vals(m);` or even `arma::vec vals(_a.size());` here.

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