<p>In <a href="https://github.com/mlpack/mlpack/pull/691#discussion_r68646696">src/mlpack/tests/lsh_test.cpp</a>:</p>
<pre style='color:#555'>> + {
> + // train a model
> + LSHSearch<> multiprobeTest(
> + rdata,
> + numProj,
> + numTables,
> + hashWidth,
> + secondHashSize,
> + bucketSize);
> +
> + double prevRecall = 0;
> + // search with varying number of probes
> + for (size_t p = 0; p < probeTrials; ++p)
> + {
> + arma::Mat<size_t> lshNeighbors;
> + arma::mat lshDistances; //move outside of loop for speed?
</pre>
<p>No need to move it outside the loop, it should not make any noticeable difference. No need to keep the comment, in my opinion.</p>
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