<p>In <a href="https://github.com/mlpack/mlpack/pull/746#discussion_r75062615">src/mlpack/core/tree/binary_space_tree/ub_tree_split_impl.hpp</a>:</p>
<pre style='color:#555'>> +}
> +
> +template<typename BoundType, typename MatType>
> +bool UBTreeSplit<BoundType, MatType>::SplitNode(BoundType& bound,
> + MatType& data,
> + const size_t begin,
> + const size_t count,
> + size_t& splitCol,
> + std::vector<size_t>& oldFromNew)
> +{
> + constexpr size_t order = sizeof(AddressElemType) * CHAR_BIT;
> + if (begin == 0 && count == data.n_cols)
> + {
> + InitializeAddresses(data);
> +
> + std::sort(addresses.begin(), addresses.end(),ComparePair);
</pre>
<p>This is a minor issue; there is a space missing between <code>addresses.end(),</code> and <code>ComparePair</code>. :)</p>
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