class="op">(</span><span class="va">fname</span>, mode <span class="op">=</span> <span class="st">"a"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">file</span><span class="op">[[</span><span class="st">"testdataset"</span><span class="op">]</span><span class="op">]</span> <span class="op">&lt;-</span> <span class="fl">1</span><span class="op">:</span><span class="fl">10</span></span></span>
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