<p>use fast csv parser to parse csv file(without mapping).</p>

<p>Original implementation : around 7220ms<br>
fast csv : around 600ms</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>&nbsp;&nbsp;<a href='https://github.com/mlpack/mlpack/pull/735'>https://github.com/mlpack/mlpack/pull/735</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>first commit</li>
  <li>first commit</li>
  <li>use fast csv parser to load csv and tsv file</li>
  <li>1 : fix bug, did not put the data into the matrix properly</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-0">src/mlpack/core/data/CMakeLists.txt</a>
    (5)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-1">src/mlpack/core/data/file_reader/csv_reader.hpp</a>
    (252)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-2">src/mlpack/core/data/file_reader/line_reader.hpp</a>
    (259)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-3">src/mlpack/core/data/file_reader/parser.hpp</a>
    (249)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-4">src/mlpack/core/data/file_reader/policy.hpp</a>
    (212)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-5">src/mlpack/core/data/file_reader/reader_exceptions.hpp</a>
    (337)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/mlpack/mlpack/pull/735/files#diff-6">src/mlpack/core/data/load_impl.hpp</a>
    (38)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/mlpack/mlpack/pull/735.patch'>https://github.com/mlpack/mlpack/pull/735.patch</a></li>
  <li><a href='https://github.com/mlpack/mlpack/pull/735.diff'>https://github.com/mlpack/mlpack/pull/735.diff</a></li>
</ul>

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