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      <img src="../logo.png" class="logo" alt=""><h1>Deque - Double-Ended Queue</h1>
      <small class="dont-index">Source: <a href="https://github.com/rpahl/container/blob/HEAD/R/0-DequeS3.R"><code>R/0-DequeS3.R</code></a>, <a href="https://github.