ns = 2;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    point() = <span class="keywordflow">default</span>;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    point(T px, T py) : x(px), y(py) {}</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   5